How to calculate the date of birth? Ways to determine the date of birth

Is it possible to calculate the date of birth itself? All known ways to determine the estimated date of birth.

Content

Being in an interesting position, a woman wants to know everything in advance, plan and foresee everything. She is interested in questions about how the baby will develop at every stage of pregnancy, how the future mommy herself will feel, what she needs to acquire for herself and crumbs, what needs to be known about pregnancy and childbirth and, finally, how and when the child should appear on light.

How to calculate the date of birth? Table

Theoretically, to determine the date of childbirth is quite real. For this, there are a lot of various ways, both scientifically based and invented by our great -grandmothers
However, no one can give an exact forecast. The gynecologist exhibits the term of childbirth on the last monthly or ovulation day, later this period is already adjusted to the uzist, who determines the date of birth by the development of the fetus. But even these figures are very relative
Normal pregnancy has a duration of forty weeks or two hundred and eighty days. But very rarely happens that the baby is born on time. The date indicated in the exchange map of the future mother, and the date, calculated by herself, are considered indicative indicators
It often happens that the baby is born a little earlier or a little later than the planned number. The date of its birth will depend on the physiological state of the mother, her childbearing organs and the needs of the baby himself
There are a lot of special tables and calculators on the Internet that allow you to calculate the indicative term of childbirth. However, you don’t need to blindly rely on these numbers at all

How to calculate the date of birth by the date of conception?

Determination of PDR by the date of conception

As a rule, future parents very rarely know the exact date of conception. However, there are those pairs that are responsible for the process of pregnancy, and conduct constant accounts.

This category of people also includes those families who have problems with conception. A doctor engaged in their situation prescribes them a special examination (folliculometry) to identify the best days for conception (ovulation days). It is these pairs that can calculate the date of birth by the date of conception.

To do this, they need to add two hundred and sixty six days to the date of conception. The resulting number will serve as a guide for the long -awaited meeting of the baby and his parents.

How to calculate the date of childbirth for ovulation?

Date of childbirth according to the date of ovulation

First of all, it is worth clarifying what ovulation is. Ovulation is the moment of the ovary. With a normal menstrual cycle, ovulation occurs in the middle of the cycle. If the cycle is 28 days, then ovulation approximately occurs from 14 to 16 days. If the cycle is shorter, then the output can be expected earlier, well, and if longer, then respectively later
Having calculated the day of ovulation, you can use the same way as with the date of conception, that is, to the day of ovulation, you need to add two hundred and sixty six days. The resulting number will be the estimated date of childbirth
It is worth clarifying one nuance. Many couples consider the date of conception the day of intercourse. However, the moment of decisive sexual intercourse cannot be called the day of conception. After all, spermatozoa are able to live in the genitals of women up to seven days, and it is not known for reliably exactly when they fertilized the egg. Therefore, the error in such calculations can be from one day to a week

How to calculate the date of birth exactly by monthly?

Date of childbirth on the latest monthly

The date of birth by monthly can be determined in two ways:

Firstly, you can use the calculation method for ovulation, only in this case you need to add two hundred and eighty days to the first day of menstruation. This is explained simply - the difference between the first day of the cycle and the moment of ovulation is about two weeks
The second method implies the use of Negell's formula. According to this formula, it is necessary to take three months from the first day of menstruation and add seven days and one year

Well, if you take into account the fact that gynecologists are calculating, starting from menstruation, and use the Negell formula, it can be assumed that this number will be the most justified from the point of view of medicine.

There is another nuance - such calculations are relevant only if a woman has a regular monthly cycle.

How to calculate the date of birth with an irregular cycle?

Very often, due to various ailments and problems with the genitals, a cycle is lost in the fair sex or interruptions with menstruation occur. If a woman has an irregular menstrual cycle, then calculating the estimated date of childbirth (PDR) for her on the latest monthly and ovulation will be wrong, since the deviation in this case may even make up about
months.

As a rule, in such a situation, the doctors focus on ultrasound indicators. It will also be possible to calculate the PDR according to the first movements of the fetus.

How to calculate the date of birth for the first ultrasound?

An ultrasound examination of the fetus allows you to establish the estimated date of childbirth with an accuracy of several days. Ultrasound determines the day of ovulation and a clear gestational age. Having taken away the period of pregnancy from the date of the study, you can easily calculate the day of conception or the day of the last menstruation, and then, using one of the above, ways to calculate PDR.

However, the accuracy of ultrasound indicators will directly depend on the gestational age. If the study is carried out up to twelve weeks, then the probability of determining a clear gestational age is the highest. In the second trimester, the accuracy of calculations is lost, since each baby develops in his own way, and it is very difficult to judge by his development by the date of his birth. Well, in the third trimester, it is generally impossible to set the terms of pregnancy.

How to calculate the date of birth after IVF?

Perhaps the simplest will be calculated by PDR after IVF. Since the entire process of fertilization and transplantation of a fertilized egg into the uterine cavity of the expectant mother is fully controlled by doctors, the terms in this case are already more accurate.

The day of the "landing" can be considered the day of fertilization. Therefore, this day you need to add two hundred and sixty six days or thirty -eight weeks. The resulting number will be the estimated date of birth.

How to calculate the date of birth by the first move of the fetus?

This method among doctors is called intuitive and is considered inaccurate. After all, the first movements of the fetus are a very thin thing. Not every woman can feel these same movements and immediately recognize them among other processes in the stomach
It is believed that normally the baby should begin to manifest himself during the first pregnancy at twenty weeks, and at the second - at eighteen. However, sometimes mothers feel these manifestations either a couple of weeks later or a couple of weeks earlier. Therefore, inaccuracy can be the same two weeks
To determine the PDR, a woman needs to add twenty weeks to the first movements during the first move and twenty -two weeks - at the second

How to calculate the date of second birth?

Date of childbirth during the second pregnancy

You can determine the date of the second birth by all the same ways that determine the date of the first birth. There is simply an opinion that a woman wears a second baby for a couple of weeks less than the first. This is a completely non -confirmed and unreasonable opinion. Sometimes the second baby can overlap in his mother’s tummy to the crescent. But it happens that he is born earlier than the specified period.

Therefore, as in the case of the first pregnancy, the second term is a relative number.

How to determine the exact date of childbirth yourself: tips and reviews

No matter how the woman’s calculation of the alleged date of childbirth is used, she must understand that all her calculations are quite approximate. A child is born only when nature wants it.

In any case, mom needs to count on something and navigate in order to prepare. Therefore, she can determine the birthday of her crumbs by any of these methods, but keep in mind that this day can come, both a few days and weeks earlier and later.