Definition of estimated time of the birth of the kid causes difficulties not only in future mom, but, sometimes, and in the doctor. When calculating date of childbirth the obstetricians-gynecologists lean on several indicators.
Instruction
1. Try to determine time of the birth of the child by date of your last periods. Add by its first day 280 days. The received number, perhaps, will become date of birth of your kid. But it is necessary to consider that in such a way it is possible to define birth time only in case you have a regular menstrual cycle lasting 28 days. If the cycle is less, then childbirth can be earlier and, on the contrary, if it is more – later.
2. The following method of definition of date of childbirth – results of ultrasonography. During the research the doctor, using special tables, defines compliance of the sizes of a fruit and term of pregnancy. On the first ultrasonography more exact results are. On late pregnancy terms the sizes of a fruit fluctuate therefore it is difficult to define exact date of childbirth. The doctor can sometimes determine the smaller term of pregnancy by ultrasonography. It is connected with a delay of pre-natal development of a fruit.
3. Besides, to count when the baby is born, it is possible of date of its first stir. If you give birth for the first time, add to this date 20 weeks. If you already had a childbirth – 22 weeks. But this method is not objective as the woman can take an intestines vermicular movement for stir of the baby. Or, on the contrary, for a long time to take stir of the child for processes in internals. Besides, many pregnant women feel the first stir on early terms – in 15-16 weeks.
4. More exact date of appearance of your child the doctor at survey will be able to define you on a chair. If the first appearance in clinic for women was up to 12 weeks, then by the uterus sizes the doctor will tell the exact term of pregnancy and estimated date of childbirth. Remember that date of childbirth depends on specific features of your organism and on readiness of the kid to be born. You should not worry if childbirth did not begin in the expected day. Normal pregnancy lasts from 38 to 42 weeks.