How to calculate the gender of your unborn baby. How to calculate the gender of the unborn child based on the date of conception and how accurate are such calculations? What is a two-year menstrual cycle calendar and how to use it

Modern science, including in the field of family planning, does not stand still. Scientists promise that in a couple of decades, parents will be able to easily choose not only the gender, but also the appearance of their child. Unfortunately, at the moment humanity is not capable of this.

This is why methods that determine the sex of a child by the date of conception are so popular. They are based on elementary calculations, which everyone can do. Should we believe the results obtained, what factors determine gender and what factors are the most important for calculations - we will study in detail further.

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To understand the essence of the issue, it is recommended to familiarize yourself with the basic concepts of the methodology. This data is needed to calculate gender. They also provide insight into what factors are key in shaping differences between boys and girls.

Many parents want to find out the gender of their unborn child.

How is gender determined at conception?

The gender of the embryo is determined during fertilization. The process is the fusion of the gametes of the partners into one cell, called a zygote. Before conception, after natural sexual intercourse, sperm enters the vagina.

Under the influence of its aggressive environment, most male gametes die within 60 minutes. The remaining male gametes move into the fallopian tubes, where, in the immediate vicinity of the ovary, the first sperm to reach its target merges with the egg. After 3-5 days, the zygote attaches to the wall of the uterus, and pregnancy occurs.

Methods that propose to determine the sex of a child by the date of conception are based either on a specific day or on the month of fertilization. Fertilization primarily does not coincide with sexual intercourse. It comes later, sometimes with a delay of 72 or more hours. Even experts are not able to say with certainty the exact calendar date. Determining the sex of a child based on the date of conception is difficult due to the difficulty of obtaining initial information.

Before calculating the sex of a child, it is important to become familiar with the mechanism of its birth. During ejaculation, a healthy man releases an average of 39 million or more germ cells. However, only one manages to reach the egg. The sperm contains half the set of chromosomes - it either carries an X or a Y chromosome. In turn, the egg always includes X. When X + X merges, a female embryo is formed, and when X and Y combine, the couple will have a male baby.

Theories about how to find out the sex of a child are not based on biological laws, but are based on other indicators. Such methods, rather, are of a numerological nature and akin to fortune telling. However, this does not prevent parents from trying to find out the sex of the child by the date of conception.

Is it true that sperm with a Y chromosome live shorter than those with an X chromosome?

There is no scientific evidence for this claim. However, some scientists have put forward the theory that X-chromosomal sperm have a longer life span. Also, supporters of this opinion believe that gametes with a male chromosome move faster, but remain less viable. Average life cycle sperm count is 24-72 hours.

What is "ovulation"?

Before determining the gender of the unborn child by the date of conception, it is necessary to understand the concept of “ovulation”. This term describes the process of migration of the female gamete from the follicle located in the ovary into the fallopian tubes. Ovulation takes about an hour and occurs approximately in the middle of the cycle, 10-14 days before the start of regulation. The egg must be fertilized within one day. If conception does not occur, then she dies and menstruation occurs later. If during this period of time the gamete meets the sperm, a zygote is formed. It attaches to the wall of the uterus and pregnancy occurs.

The path of an unfertilized egg during ovulation

How to calculate the time of ovulation?

The next step in how to find out the gender of the unborn child by the date of conception is calculating the exact time of ovulation. In most cases the process does not have external manifestations, but the following symptoms are possible:

• sudden increase in the amount of transparent discharge;
• increased libido;
• irritability, lethargy or loss of energy;
• pain or heaviness in the mammary glands;
• pain in the abdomen, similar to sensations during menstruation.

If there are no symptoms and the cycle is regular, then simply subtract 14 from. The resulting number in the calendar is considered the desired period.

How to calculate with an irregular cycle?

If the cycle is unstable, then calculating the sex of the child by the date of conception is more difficult. Women often resort to a basal temperature calendar. Its increase in the middle of the cycle is a sign of ovulation. Data is obtained by measuring rectally with a thermometer in the morning. Information is recorded daily on the calendar. In order to determine the sex of a child by conception, the calendar must be kept regularly

A good way to find out about the onset of ovulation before determining the gender of the child by the date of conception is a test. It is sold everywhere and has affordable price, and its operating principle is similar to express strips for detecting pregnancy.

Preparation for calculation

Find out the gender of the unborn child by date of conception from scientific point vision is not possible. If you want to have fun, you can make the calculation:

1. Determine in advance the maximum the exact date ovulation. For this purpose, observation should be carried out for 3-6 months. Results obtained within 1 month rarely provide the correct understanding.
2. Prepare paper and writing materials. They will be useful for recording results and drawing up a long-term plan.

You can calculate the gender of your unborn child based on the date of conception with minimal preparation. The technique requires only one thing original value. If we're talking about As for other methods that do not take ovulation into account, then the situation there is even simpler. All you need is paper and pen. In some cases, calculations can be made using online resources.

The method is based on the theory of the speed and lifespan of sperm. According to it, carriers of the X chromosome can linger in fallopian tubes for 3-7 days. That is why, if you need to calculate the gender of the child by the date of conception and you intend for X + X to unite, then coitus must be performed a couple of days before the eggs leave the follicle. If the goal is to calculate the gender of the child by date and become parents of the future man, then intercourse should occur immediately before ovulation. According to supporters of the method, the life cycle of a gamete with a Y chromosome is 3-5 times shorter.

Another unconventional way– determination of the child’s sex using a mother’s blood test. Here we do not mean an accurate blood test for the presence of fetal DNA fragments in it, which Lately is becoming a popular method. We are talking about a method that is based on a very extravagant idea of ​​a complete change of a woman’s blood every three years. For representatives of the stronger sex, the process supposedly takes 4 years.

1. For the parent. In order to conduct a blood test to determine the gender of the child, you need to add three to the year of birth of the woman. Record your results.
2. Do the math for your father. The test for updating the blood of the child’s gender requires taking into account the indicators of the man. To obtain data, you need to add 4 to the year of birth.
3. Calculate the sex of the child by updating the blood of the parents. According to the developers of the method, gender is determined by the one whose body is “newer” at the time of fertilization.

Some advise determining the sex of the child by blood type and Rh factor. However, this method is also similar to the theory of probability, and not to science.

How else can you determine?

Of course, calculating ovulation is far from the only method. Calculating the sex of a child based on the date of conception can be based on the experience of ancient eastern sages.

This method also does not take into account scientific knowledge about how the sex of a child is determined at conception. It is built not on biological, but on numerological postulates. The method appeared in ancient times and was used everywhere in the Middle Kingdom.

According to legend, a table capable of determining the sex of a child by the date of conception was used even by representatives of the ruling dynasty. Knowledge is still used not only in the Middle Kingdom, but throughout the world. In Russia, it became possible to find out the sex of a child by the date of conception using a table in the 1990s. It was then that Chinese knowledge was first published in a publication for expectant mothers.

It is easy to determine the gender of the expected child using this method. You need to find the column with months and select the period of conception. Next, find the moment of fertilization. At the intersection of the columns there will be an answer to the question of who will be born to the couple.

In ancient Japan there was a cult of men. Every family eagerly awaited the arrival of a boy. This is why baby planning technologies were so in demand. That era could not boast of scientific knowledge, but biology and physiology were successfully replaced by astronomy and numerology.

The Japanese sages did not stand aside and developed their own table. It is very similar to the Chinese method, but contains two parts. In the first part of the method, at the intersection of the columns with dates of birth, you need to find a number. Next, in the second part of the table, find the column under the resulting number. It will detail the months favorable for conceiving a child of a particular gender. Months in which the probability of the birth of babies of both sexes is the same are not recommended for procreation.

How accurate are Eastern methods?

None of the proposed methods guarantees obtaining the correct answer. Indeed, many couples successfully calculated the birth of a baby of a certain gender, but exactly the same number of families made mistakes in planning.

Eastern methods cannot be assessed as the ultimate truth. This is nothing more than a game or fortune telling, with a 50/50 chance of a correct answer.

Useful video

It is a widely known fact that in any planning, a man plays a decisive role. After all, it is his sperm that can carry both the X chromosome and the Y chromosome, which will affect the sex of the baby. There is an opinion that you can plan who will be born to you based on the day of ovulation:

Conclusion

1. Modern mothers are offered numerous methods: the blood renewal method, the Rh factor test and oriental tables.
2. You can use them for your own entertainment.
3. Neither calculation by the date of ovulation, nor the theory of blood renewal can be seriously used by future parents.

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Determining the sex of the unborn child

The “blood renewal” technique is based on the fact that men’s blood is renewed once every 4 years, and women’s - once every 3 years. If the father’s blood is “newer,” the child will be a boy, if the mother’s blood will be a girl. It is necessary to take into account all the large blood losses after which the blood was renewed - operations, childbirth, miscarriages, abortions, blood transfusions, donation of donor blood.

Ancient Chinese table for determining the sex of a child by time of conception

Want to test yourself? First find the mother's age, then relate it to the month in which the child was conceived. You will receive a plus or minus sign indicating whether it is a boy or a girl, respectively. This way you can check the birth of yourself or your relatives.

Considering the age of the intended mother, which is indicated in the table from 18 to 35 years, you determine in which month a boy or girl can be born, choose the preferred one and count nine from this month to get the time of conception. Good luck in your endeavors!

1. Enter your date of birth and the date of your planned conception. The date of conception is entered as an approximate date. In the middle and at the end of the year, the day of conception is actually not important. The date determines whether it is before or after the Chinese Lunar New Year and which month it belongs to.
2. Click the button “Calculate the lunar age of the mother and the sex of the child.”
3. The calculator will carry out all the necessary calculations, give you the lunar age, and convert the entered date to the date according to lunar calendar and will tell you who the Chinese think you are most likely to have as a result of conceiving at that time.

To quickly assess the forecasts for the neighboring months, you can simply refer to the table below the calculator. There, find the line with the mother’s lunar age and the column with lunar month conception. At the intersection of these rows and columns is the gender prediction (“M” (boy) or “D” (girl)).

According to Chinese statistics gender determination accuracy is 75-80%.

Remember that no lunar calendar can simultaneously take into account all the characteristics of all women!

Moon calendar- not Gregorian, the number of days in a year and months may differ (insignificantly) from our usual calendar. All dates in it are tied to the phases of the moon.

How to determine age using the Chinese lunar calendar?

The Chinese believe that when a baby is born, he is already 1 year old (this is 9 months of intrauterine development rounded up to a year). After each new year according to the Chinese lunar calendar, 1 year is added to the lunar age, regardless of the month of birth.

Example of lunar age calculation

If you were born, for example, on January 8 (before KNG), you are already 1 year old at the time of birth. And in March, after KNG, you are already 2 lunar years. And so on, each KNG adds 1 year to your age.

Every young family wants to have children. Many dads really want sons, since a son is a continuation of the family line. But many people want to have a beautiful daughter. Therefore, future parents are trying to calculate the sex of the child. Previously, everyone took on this task - grandmothers, fortune tellers, self-proclaimed astrologers. Very often the result did not live up to expectations. It was very sad for those parents who are preparing for the birth of a girl, buy everything pink, and a boy is born. Or vice versa. In any case, it is impossible to calculate the sex of a child 100%; this has not been scientifically confirmed. Nowadays, you can try your best to do this, or at least try.

For example, there is a table where the mother’s age is correlated with the month of conception. Next method This can be done by following a certain diet by both parents. For those who want a girl, it is necessary to exclude foods such as meat, canned food, cheese, and potatoes. Eat more foods that contain calcium and magnesium. For parents who are expecting a boy, milk and dairy products, chocolate, and peanuts should be excluded. And eat more of those foods that contain a lot of potassium and sodium, and eat less of those that contain calcium and magnesium.

You can calculate the gender of the child also through ovulation. More viable sperm are girls. they can live up to a week waiting for the egg to be released. Boys die earlier. But if ovulation has already occurred, then they move at a faster speed. And in this case, the probability of having a boy is much higher. In order to calculate the sex of a child using this method, there is a special ovulation calendar that can be downloaded on the Internet.

There is also another method to calculate the sex of a child. It depends on the renewal of the blood of the expectant mother and father. And blood renewal depends on the age of the parents. renewal of human blood begins at birth. There are such concepts as strength or youth of blood. The power of blood allows you to more accurately calculate the gender of the child.

There is another way to calculate the gender of the unborn child. It is closely related to the age of the expectant mother. This method is only suitable for women whose ovulation occurs in the middle of the cycle. If the conception of a child falls in an odd-numbered year of the mother, and the parents really want a girl, then it is better to conceive in January, March, May, July, September and November. In even years - in February, April, June, August, October. As for boys, we need to do the opposite. In general, it doesn’t matter who it is, a boy or a girl. The main thing is that this is your dearest person. All the will of God. Health, happiness, good luck to you and your children.

At all times, women wanted to know what gender of child they were carrying. And the best thing is to be able to “order” the floor. This is especially true for those who are already raising children of the same gender and really want a toddler of the opposite gender. It is in such situations that a feverish search for methods and ways to guess the crumbs begins.

The “omniscient” Internet is ready to provide many different ways to determine the sex of a child by the date of conception, by some properties and characteristics of the parents’ blood, and even by the mysterious methods of Freiman-Dobrotin and Budyansky. How do these methods work, are any of them 100% reliable, what to believe - we will answer these questions within the framework of this article, consider all known methods and analyze the results.

How is the gender of a child determined?

To better understand the essence different methods, and also to understand whether they are effective, you need to understand how the baby’s gender is formed. Even from school biology lessons in high school, everyone knows that two sex cells, gametes, take part in the conception of a new person - a male (sperm) and a female (egg). Each of these cells has its own genetic makeup. A sperm can have a set of XY and XX. A woman's egg always carries only the XX set.

If the gender of the future baby depended only on the woman, as some claim, then only individuals with the XX set would be born, that is, only girls. No options. But nature took the side of diversity and gave the right to be responsible for the sex of the offspring to men. If a woman's egg is fertilized by a sperm with a set of XX, a girl is born. If fertilization takes place with the participation of a male sex cell with the XY set, a boy is born. There is no other option.

It turns out that the sex of the baby is predetermined even when the parents do not yet realize that they will soon become parents, that is, from the first seconds after one of the tens of millions of sperm manages to break through the “armor” of the egg and penetrate under the membranes of the oocyte. XX or XY – nature decides; by and large, nothing depends on either a man or a woman in this matter.

Gender cannot change, since the genetic set brought by sperm is not subject to any influence. The maternal and paternal chromosomes fuse to form a new organism. And from the first minutes after conception, every little detail is determined: at the genetic level, it is obvious what the child’s eye color will be, the color of his skin and hair, height and build, what inherited diseases he will have and even character traits, talents and abilities.

The gonads of the embryo are formed from 5-6 weeks of pregnancy. The mother is still wondering if she is pregnant, doing tests and rejoicing at the stripes, and the baby is already beginning to develop the prototypes of the glands that will later become ovaries in girls or testicles in boys. There are no external differences in the fruits - boys and girls have a small genital tubercle where the external genitalia will later form. This happens until about 12 weeks of pregnancy. Then the organs only grow and increase in size, opening up opportunities for diagnosis through ultrasound.

Optimal time, in which the genital organs of the fetus are most visible in the best possible way, the period from 16 to 22 weeks of pregnancy is considered. Up to 16 weeks the baby is small, and after 22 weeks it becomes large and can group itself in such a way that the genitals are closed from view. The accuracy of the study is reduced. During the period we indicated, it reaches 90-93%.

But waiting until mid-pregnancy is often unbearable for the expectant mother. You want to know your gender earlier, and sometimes even before conception. And therefore a lot of questions arise, many myths are born around sex determination at the earliest stage or during planning. This behavior is characteristic not only of modern women; their distant ancestors also sought to find out the gender of the heir by any means. Some needed to give birth to a boy, a successor to the dynasty, the throne, or for religious reasons. Others dreamed of a daughter and tried in every possible way to find out how to conceive her.

In their attempts, women drank the blood of sacrificial animals, went to seers and sorcerers, read fortunes by stars and omens, ate special foods and drank herbal decoctions. They can be forgiven, because at that time they did not yet know that what a woman drinks and eats cannot in any way affect the genetic make-up of the male reproductive cell. Today women, although savvy in matters of medicine and educated, continue to insistently demand effective method determine the gender of the baby. Let's look at the methods that are commonly used for this.

Blood renewal method

The method is based on the assumption that human blood can renew itself and does so at certain intervals. It is assumed that for representatives of the stronger sex this occurs once every three years, and for women - once every four years. The authors of the method, whose names have not gone down in history, claim that it is possible to conceive a girl when the mother’s blood is the last to be renewed, that is, it is younger than the blood of her partner. To conceive a boy, according to the method, the opposite condition must be met - the father’s blood must be “younger”.

Essentially, the method is great way for the development of logic and thinking. Mathematical calculations will give your brain a workout, because in order to understand whose blood is “younger,” you will have to do some careful calculations.

You can start from birth. Men's age is divided by 4, and women's age by 3. But it's not that simple. There is too much to consider. So, an operation, even a small one, blood transfusion, donation, large blood loss during a wound or injury practically “zero” all the blood renewal cycles that existed before, and everything starts from scratch.

It works like this. If a woman is 24 years old and her man is 28 years old and neither partner has become a donor, has had a blood transfusion or had surgery, then 24 needs to be divided by 3, and 28 by 4. We get the number of updates the woman has - 8 , for a man - 7. Last update occurred in a man, and therefore there is a high probability of having a boy.

Now let's imagine that a woman had surgery a year before becoming pregnant. Her blood, with the same number 8, will be younger, and, according to the method, there is a greater chance of giving birth to a daughter. If three years before conception a man was put on the operating table, then the chances of having a boy increase again.

We assessed the effectiveness of the method based on reviews on the Internet; fortunately, on the forums there were quite a lot of “it worked and didn’t work.” For the most part, opinions were divided. The estimated accuracy of the method for predicting gender based on blood renewal is no higher than 50-55%. You might as well not count anything and not do an ultrasound. Any pregnant woman has a 50% chance of giving birth to either a boy or a girl. There is no third option, as they say.

What does traditional medicine think about the method? Absolutely nothing. The theory of blood renewal is not reflected in scientific works on medicine; it actually does not exist. What the authors of the method meant when they spoke of “updating” is also not entirely clear to doctors. There is such a thing as “hematopoiesis,” but it can be considered a renewal rather conditionally. Hematopoiesis is the process of formation of blood cells by the bone marrow with the participation of the lymphatic system. This process is daily, continuous; if it happened once every few years, a person would not survive. The blood does not undergo another renewal either once every three years or once every four years.

In addition, hematopoiesis occurs in exactly the same way in people of different sexes and ages, which gives us the right to assert that it has nothing to do with reproduction: the blood is renewed every minute in any person - a baby, a teenager, an old man. While a person is alive, hematopoiesis is present. Therefore, we cannot classify the blood renewal method as accurate.

Determination by Rh factor and blood group

For some reason, the authors of this technique also wished to remain anonymous. But they left a stunning theory for the sufferers, the essence of which boils down to the fact that the blood type of the parents directly affects the gender of the unborn child. Thus, it is assumed that a woman with the first blood group and her partner with the same group usually give birth to girls. If the owner of the first blood group wants to give birth to a son, she will have to find a partner with the second blood group.

Almost the same picture is with the Rh factor. The authors of the method are confident that an Rh-negative woman can count on having a daughter only from an Rh-positive man.

What these conclusions are based on is not explained. But on my own behalf I would like to say that the author of this article has the first blood group with a similar group in his partner. It would seem that she should live in a flower garden of girls, but there are three boys in the family. One puncture can be considered an accident, but three in a row is unlikely. In addition, the theory cannot explain how to understand the birth of children of different sexes to the same couple.

According to reviews, the reliability of the method is extremely low. Even those who like to calculate and guess admit that the methodology does not stand up to criticism. There are few positive reviews. We can estimate the reliability to be no higher than 25%.

Traditional medicine It is possible that he does not even suspect such a method. No doctor's textbook or nurse's handbook describes the quality of sperm or eggs in relation to blood type. In men with the first and second groups, with the third and fourth, as well as with both variants of Rh, there is an approximately equal ratio of sperm with the genetic set XX and XY in the seminal fluid. Therefore, the chances of conceiving girls and boys are approximately equal.

The woman's Rh group and Rh factor are important only for the well-being of the fetus (if the Rh factor is negative, the expectant mother may develop an immune conflict with the red blood cells of the fetus conceived from a Rh positive man). The group and rhesus cannot influence either the reproductive abilities of a woman or the gender of the child.

Determination by date of conception

The moment of conception has always been given special significance. Astrologers and numerologists believe that from this moment begins Natal chart future member of society. Based on the date of conception, the destined fate was determined, and they also sought to understand whether it was a boy or a girl. There are several methods based on the day of conception, all of them are quite popular among women. Let's take a closer look at them.

Ovulation calculator

Cycle duration

Duration of menstruation

• Menstruation
• Ovulation
• High probability of conception

Enter the first day of your last menstrual period

Ovulation occurs 14 days before menstrual cycle(with a 28-day cycle - on the 14th day). Deviation from the average value occurs frequently, so the calculation is approximate.

Also, together with the calendar method, you can measure basal temperature, examine cervical mucus, use special tests or mini-microscopes, take tests for FSH, LH, estrogens and progesterone.

You can definitely determine the day of ovulation using folliculometry (ultrasound).

Sources:

1. Losos, Jonathan B.; Raven, Peter H.; Johnson, George B.; Singer, Susan R. Biology. New York: McGraw-Hill. pp. 1207-1209.
2. Campbell N. A., Reece J. B., Urry L. A. e. a. Biology. 9th ed. - Benjamin Cummings, 2011. - p. 1263
3. Tkachenko B. I., Brin V. B., Zakharov Yu. M., Nedospasov V. O., Pyatin V. F. Human physiology. Compendium / Ed. B. I. Tkachenko. - M.: GEOTAR-Media, 2009. - 496 p.
4. https://ru.wikipedia.org/wiki/Ovulation

Chinese calendar

Science does not know for certain where and when the Chinese table for determining the sex of an unborn child appeared, but there are assumptions that it was created based on knowledge of Chinese culture and history. The Chinese, it should be noted, generally strive to check everything with calendars - lunar, agricultural, astrological. During the period of dynasty wars for territoriality, the birth of boys was especially welcomed. Therefore, you can find information that the creation of the calendar refers precisely to those distant events that took place about seven hundred years ago.

The calendar, according to popular legend, was discovered by archaeologists during excavations of an ancient temple near Beijing. They say that it was carved in stone and had signs suggesting it belonged to the imperial court. This is nothing more than a beautiful legend. In China in the 14th century there was no Gregorian calendar, and the table is compiled using such months. In addition, the find (stone slabs) was never received by any museum in the world. Therefore, the Chinese calendar is quite possibly not Chinese at all, or even a calendar, but it is in demand among women.

The method is based on predicting gender based on the mother's age and month of conception. It is assumed that in at different ages A woman has different chances of having a daughter and a son. Age, of course, leaves its mark on a woman’s fertility; it has been scientifically proven that women over 35 have a higher chance of giving birth to twins. But with the floor everything is not so simple.

Not everyone knows how to use the Chinese table, despite the fact that it is not difficult to find it on the Internet. To calculate the sex of the baby, you need to know the woman's lunar age. It is considered age not from the first cry in the maternity hospital, but from the moment a person is conceived. If a woman is 22 years old according to her passport, then in lunar equivalent it will be 22 years and almost 10 months. In the calendar, in the “age” column, you need to find the number 22. If a woman is 22 and a half years old according to her passport, then her lunar age will be 23 years and 4 months, and therefore in the “age” column you need to find the number 23.

Keep in mind that you may have been born prematurely, for example, seven months or eight months. In this case, you need to add not 10, but 7 or 8 months to your age. Check the circumstances of your own birth with your closest relatives, and only after that, if you decide to use this technique, begin the calculation.

Everything else is simple. Next to the age you select, the gender of the child will be indicated depending on the month in which conception took place or is still planned. Please note that you need to determine the date of conception, and not the month in which your last period began. It happens that menstruation begins at the end of July. And the woman believes that “July” should be selected in the table. But ovulation already occurred in August, and therefore it is more correct to choose August, opposite your lunar age.

Determining the gender of the baby using the Chinese calendar is easy. But how reliable is it? Women may be misled by indications that the method is 70-80% reliable. This is wrong. Firstly, this table does not take into account the age and other characteristics of the father, but still this would be more logical, because the gender of the child does not depend on the woman. According to reviews, The honest effectiveness of the method is at the level of 50%, as well as without calculations at all. Either a boy or a girl.

Official medicine does not take the Chinese calendar seriously and does not attach any importance to it. But if a woman, especially a pregnant woman, really wants something, then it’s better to give it to her. Therefore, the Chinese table is an excellent psychotherapy while waiting for the time frame that will make it possible to find out the gender by ultrasound, if not 100 percent, then at least 90 percent.

Japanese calendar

It is not known for certain where and when the Japanese calendar appeared, since there is no reliable information about it. According to one legend, astrologers in the country rising sun They observed the movement of stars and planets for a long time and as a result came to the conclusion that the dates of birth of a man and a woman determine the gender of their offspring. The secret knowledge was brought to the emperor and passed on to the women in the imperial family, since the Japanese rulers only wanted sons.

The ancient origin of the Japanese table raises the same reasonable doubts as the origin of its Chinese “friend”. But pregnant women, who want to know the sex of the baby within three weeks after conception at any cost, have little interest in the historical background of the methods.

Unlike the Chinese table, the Japanese calendar also considers the father as a direct participant in the process of conception. In total, it uses three criteria: the date of birth of the mother, the date of birth of the father and the date of conception of the fetus.

In the first table you need to find the month of birth of the father and the month of birth of the mother. At the intersection of a row and a column, a certain number will be found, which is called the coincidence number. We remember this number and move on, move on to the second table.

It presents the months of conception in relation to the resulting match number. You need to find a match at the intersection and it will become clear whether you can expect a daughter or a son in the near future.

Despite the absurdity of statements about a certain dependence and cyclicity in the genetic set of gametes on the age of the mother and father, reviews of the Japanese table, oddly enough, are quite positive. Women indicate that the probability of planning the sex of the baby according to her is, of course, not one hundred percent, but quite often the final result “coincides” with the prediction. There are more than half of such reviews, and therefore the reliability of the method can be assessed at a record 60% for its analogues.

Official medicine is adamant - geneticists do not see any connection between age, date of conception and the sex of the child. With age, in the total number of sperm in a man, the balance between sperm with genetic information XX and carrier cells of the genetic set XY does not change. This means that the likelihood of conceiving a boy or girl does not increase or decrease for a 40-year-old man compared to a 20-year-old man.

By ovulation

This method is as close as possible to traditional and official medicine, but again it only operates in certain terms, without substantiating speculation. Everyone knows that getting pregnant is possible only during the period of ovulation. In women with a 28-day classic menstrual cycle, ovulation usually occurs on the 14th day after the start of the last menstrual period. In women with a different cycle length, ovulation also occurs in the middle of the cycle. Ovulation is just a day, maximum two days. That is, a woman is fertile only 1-2 days a month.

The ovulation method of conception is based on the assertion that XX and XY sperm have different life expectancies and also have different speeds when moving. Thus, it is believed that XY (“boy”) gametes move faster, but they are less tenacious. And XX cells are less mobile, but can survive for quite a long time, waiting for a convenient day - the day of ovulation, when the egg leaves the follicle and becomes available for fertilization. According to the method, favorable days to conceive a boy, these are the days of ovulation and the day after it, and to become the mother of a girl, a woman is asked to have unprotected sexual intercourse a couple of days before ovulation, so that the XY sperm will die by the time the egg is released, and only the more tenacious XX will remain.

In theory, an ovulation chart for conception should be in the purse of every woman who is planning a pregnancy. On it you can mark the days of the greatest likelihood of conceiving a girl or boy.

Reviews about the method are mixed. The votes for “agreed” and “failed” are distributed in approximately equal proportions. This allows us to judge that The reliability of the method does not exceed 50-55%. Then the question reasonably arises: why is the method considered near-medical? The fact is that the essence of the method - the difference in the characteristics of sperm with different sets of sex chromosomes - is far-fetched. Reproductologists, no matter how hard they tried, found no differences in the speed of their movement, as well as in their ability to survive.

The only thing that is beyond doubt is the ability of male reproductive cells to patiently “wait” for ovulation in the fallopian tubes. Sexual intercourse a few days before ovulation (3-4 days) may well lead to pregnancy, even if during the ovulation period the couple used contraception or did not have sexual intercourse at all. But the sex of the child can be different - in 50% of cases boys are born, with the same probability - girls.

Freiman-Dobrotin method

In essence, this method will somewhat improve the Japanese calendar, since three indicators are used for calculation: the dates of birth of the parents and the date of conception of the fetus. The difficulty is that you need to know the date of conception, and with this there are usually difficulties, because ovulation can shift, be late, and it is almost impossible to determine the date of conception with an accuracy of one day.

However, the creators of the method assure that the baby will inherit the gender of the parent whose numerical coefficient at the time of conception is higher. It should be noted that the calculations are very complex. In the late 90s, the method was founded by Professor S. Dobrotin and tested at the Gorky Maternity Hospital. There was no ultrasound at that time, and the method proposed by the professor quickly became wildly popular. A newspaper article about the professor’s theory caught the eye of programmer Mikhail Freiman, and he improved and systematized the calculations. It is he who owns the tables that are used today by those who want to use this method to find out who should be born.

You will have to work with several tables. The first is called paternal. In it you need to find the year of birth of the father and the year of conception of the baby. A number will appear at the intersection of the column and row. We write it down and conventionally designate it as “number 1”.

The second table is also father's. In it you need to find the month of your father’s birth and determine what year it was - a leap year or an ordinary year. At the intersection we find another number and write it down - this is “number 2”. In the third table, we select the birthday of the child’s father, adjusted for how many days are in the month of his birth. At the intersection we find the “number 3”. In the fourth tablet we select the month of conception of the baby. We fix the number 4. In the fifth table, we select the day of conception and see what coefficient it corresponds to, so we get the “number 5”.

The sixth table summarizes the paternal coefficient. Get the sum of the five numbers that we wrote out and recorded earlier and find in the sixth table the coefficient corresponding to the sum. Next you need to calculate the woman's coefficient. To do this, you need to do the same thing, but only with six subsequent tables, labeled as G1 - G6. Compare the two results. If the maternal number is higher, a girl will be born, if the paternal number is higher, then a boy will be born. If you get two zeros or two identical other numbers, then you should expect the birth of a girl.

Reviews about the method are mixed. Approximately, as with other methods, the probability of a prediction matching the truth is at the level of 50%, but the calculation process itself is literally mesmerizing. It is also not clear what to expect for parents who are expecting twins of opposite sexes, because the method and tables do not allow for multiple births and variability.

Budyansky method

The Budyanskys are spouses who were teachers. Over time, they began to notice a certain pattern between what month the children and their mothers were born. As a result, they pulled up information about school students over the past three decades and came up with their own method for calculating estimated gender.

This method is based on the relationship between the mother's date of birth and the regularity of her menstrual cycle. The couple proposed their own menstrual calendar. It has not 12, but 13 months, and each month has 28 days. In fact, this is an analogue of the lunar calendar.

Using the calendar, a woman is asked to determine what type of her menstrual cycle is - even or odd. To do this, she just needs to know her own date of birth and year. Nine calendar months or ten lunar months are subtracted from the date and another date is obtained. This is what you should look for in the very center of the table. On the right and left are corrections for even and odd years of birth (1980 is even, and 1981 is odd, etc.).

Those with an even cycle will have a high probability of conceiving a girl in all even months, and a boy in all odd months. For those with an odd cycle, everything is exactly the opposite - a girl can be conceived in odd months, and a boy can be conceived in even months. That is, the principle of correspondence works - if the month matches the type of cycle, a girl is born.

According to reviews, an accurate result using this method is obtained in 52% of cases, in 35% of cases there is no hit, and 13% of women claim that the method was correct only for one of the children, and for the other the calculation was erroneous.

The Budyansky method has no medical basis. But scientists have recently discovered that an egg can have different enzyme potential in different cycles. As a timid assumption, American reproductive scientists suggested that oocytes themselves “lure” sperm the right type- XX or XY. It has not yet been possible to refute or confirm this, but the version has a right to exist.

Folk signs

The search for opportunities to predict the sex of a child before birth has such ancient history, which has become truly popular entertainment. There are many folk signs by which women tried to guess the gender of their unborn child. Let's look at the most common and popular ones.

Belly shape

The sign says that a round belly is for a girl, and a pointed belly is for a boy. Medicine responds to this superstition that the shape of the abdomen in no way depends on the gender of the baby.

The belly will be of the shape provided by nature, or rather anatomical features of this woman. If the pelvis is narrow, the babies take a more compact position and the expectant mother's tummy looks rounded. In women with wide hips and pelvis, the stomach “blurs” somewhat, regardless of what gender of baby she is currently carrying.

Affects the shape of the abdomen and the location of the fetus in the womb. If the baby's back is turned to the right, the belly will be sloping to the right; if it is positioned head up, the belly will look somewhat smaller.

It is not always possible to determine even twins by the shape of the abdomen, because there are very small and miniature babies. A big belly doesn't mean anything either.

Presence of toxicosis

Popular wisdom says that a woman who is pregnant with a daughter is less susceptible to toxicosis. Her baby too future woman, and she somewhat agrees with her mother, and therefore will not bother her. But a boy in the womb can make a very troublesome life for his parent, especially during early stages pregnancy.

Doctors say that the origin and causes of toxicosis have been little studied, but nausea, vomiting and changes in the perception of tastes and smells clearly have nothing to do with gender. There are women who do not experience toxicosis at all, but not all of them give birth to the daughters promised by a sign on this occasion.

Baby's behavior during pregnancy

A folk superstition says that boys are more active in their mother’s womb, they kick more often, and the mother feels the heaviest pokes in the area Bladder. Girls are calmer, quieter, and if they fuss, it’s somewhere in the area of ​​the mother’s kidneys and liver.

Doctors categorically reject such claims. The motor activity of the fetus depends on gender, but also on temperament, character and well-being, as well as on a host of accompanying factors (whether the mother is full, whether she slept well, whether she feels normal, whether the baby has enough oxygen). Healthy child moves quite actively. Regarding the location of pokes and jolts, obstetricians explain that this depends on the location of the fetus. Where the legs are, the shocks will be stronger, and where the arms are, there will be more “swimming.” The gender of the fetus does not affect presentation and position in the uterine cavity.

Food cravings

It is popularly believed that future mom From the first days of pregnancy, the boy eats a lot, often, with appetite. She prefers meat products, fish, eggs, as well as salty and spicy foods. A girl in the womb, according to superstition, forces her mother to eat sweets and fruits. Also, for a woman who is about to give birth to a daughter, a dairy diet becomes her favorite from the first months.

From the end of the third month of pregnancy, children in the womb really begin to distinguish the taste nuances of the amniotic fluid that they swallow. And all belly-dwellers, without exception, swallow water with a sweetish taste with great pleasure - glucose is pleasant to the child’s body even in utero. But boys and girls cannot influence in any way what products mother chooses for her own nutrition.

Therefore, taste preferences during bearing a child and his gender are incomparable things. There is a theory that a woman intuitively chooses for food what contains maximum amount the substances she lacks. If a pregnant woman eats chalk, she does so because of a lack of calcium at the time of intensive growth of the baby’s skeletal system, and not at all because the child is a boy or a girl.

If you want salted cabbage, so much so that you urgently need to send your husband to the supermarket at 4 am for this cabbage, then most likely the woman does not have enough potassium. The gender of the baby does not affect the nutritional habits and gastronomic preferences.

Beauty and age spots

A folk sign says that women who, after conception, have blossomed and become prettier, acquired a gentle blush and a brilliant gaze, will become mothers of boys. Girls, according to legend, take away the beauty of their mothers, and therefore the woman becomes edematous, covered with age spots, suffers from falling hair and brittle nails.

A pregnant woman's appearance actually changes. But changes occur under the influence of hormones, in particular progesterone. It is this that leads to fluid retention in tissues and the development of edema. It affects the production of melanin and makes it excessive, causing pigment spots to appear. Pimples in the early stages of pregnancy, blush, and brilliant eyes are also a merit of hormones that ensure the process of gestation from conception to childbirth.

The signs that women attribute to the manifestations of the child's gender are thus simply signs of pregnancy. Individual and varied. The gender of the child has nothing to do with it. Increased or slowed hair growth on the legs and armpits, swelling in the legs or arms - all this has nothing to do with the baby’s gender.

Dangerous signs and superstitions

There are signs that can harm a woman. I would like to dwell on them separately. So, to conceive a girl, some folk “craftsmen” recommend douching with a soda solution before sexual intercourse. Washing the genital tract with soda, in their opinion, reduces the acidity of the vagina and promotes better survival of “frail” and “dead” XY sperm. If you create an alkaline environment, they will have a better chance of reaching the egg and fertilizing it.

The method is not suitable for a couple who is serious about future parenthood. Even a slight excess of soda in the solution can disrupt the natural balance of bacteria in the vagina, and even if conception takes place, it is possible that immediately after the two cherished lines on the test you will have to go to treat vaginosis.

A decoction of boron uterus, which is credited not only with miraculous properties for increasing fertility, but also with an increased likelihood of conceiving a boy, should be taken only as indicated by a doctor, and not because of a passionate desire to raise a son. He changes hormonal background and can be quite harmful to women's reproductive health.

The method of determining sex by movements often implies that a woman must lie on her back, in an uncomfortable position for her, and determine in which side the baby is tossing and turning. It is better to refrain from such actions, because the growing uterus strongly compresses the inferior vena cava in a supine position. A woman may lose consciousness, and the baby begins to become active in this position for a reason - he also suffers from impaired blood flow.

The most accurate way

The most accurate way to order the gender of the child at the planning stage is IVF with genetic preimplantation diagnosis. But embryos obtained in the laboratory from the sex cells of partners are selected according to gender, according to existing legislation, only when the birth of a child of a certain sex poses a mortal threat to him, for example, if the mother is a carrier of the hemophilia gene, she cannot give birth to boys, they will be sick.

Doctors select only embryos of a certain sex and implant them in the uterus. Could there be a mistake? No, because the genetic makeup of a fertilized egg is completely obvious during the examination, like many hereditary diseases.

A good way to find out the sex of the baby is to do an ultrasound. Not 100%, but from 75 to 95% depending on the stage of pregnancy. And this is not the 50% accuracy that we talked about when analyzing individual methods and methods above. In addition, an ultrasound will answer other questions - is the baby healthy, are there twins in the tummy.

Also, from the 9-10th week of pregnancy, with a probability of almost 100% (99.7-99.9%), you can find out by doing a non-invasive prenatal DNA test, which will tell you about the sex of the child and the absence of certain anomalies (or their presence).

To the question of what to believe, the answer is quite simple - whatever you want, as long as it does not harm the baby and mother. If a woman follows a schedule of visits to the doctor, listens to qualified advice from specialists, and at the same time in the evenings she wonders wedding ring hanging over the stomach, or calculating the sex of the child using a table, there is nothing wrong. But you should always leave some chance for a miracle - sometimes even ultrasound is wrong. Only nature is not mistaken; it will show exactly who you have. But already in the delivery room.

All about conception