To define exact day of conception and childbirth very difficult. All ways which can answer concerning each pregnant woman two questions will give only approximate dates. However, knowing even approximate day of conception and, respectively, day of childbirth, it is possible to present quite when there is a long-awaited moment of the birth of the child and to be prepared thoroughly.
Instruction
1. It is possible to determine exact date of conception to those women who watch the menstrual cycle and know in what day they have an ovulation. Only during an exit of a mature ovum from a follicle it is possible to become pregnant. The menstrual cycle lasts generally 28-35 days. The ovulation occurs precisely in the middle of this period. For example, if your cycle proceeds 28 days, then the ovulation comes on 12-14 day. Many women are sure that conception happened that day when there was a sexual intercourse. This belief is incorrect. It is possible to become pregnant only in the period of an ovulation, and this date can not coincide with day of sexual intercourse (as is well-known, spermatozoa live several days).
2. By date of conception it is possible to count with ease when you give rise. If you are sure that you know day of X, then to this date safely add 280 days (last pregnancy so much). The received number is also the estimated term of childbirth.
3. Some gynecologists establish the approximate term of childbirth on the first day of the last periods. Knowing date when at you began monthly, and having used a simple formula Negele, it is possible to calculate date of childbirth. For this purpose it is necessary to take away of the first day of periods three months and to the received number to add seven days. This calculation does not differ in absolute accuracy. The fact is that the formula is calculated for women with a menstrual cycle in 28 days. Those who have a cycle more or less can seriously be mistaken in calculations.
4. At calculation of day of a rodorazresheniye time of the first stir of the child is also considered. Usually pregnant woman for the first time feels movements on 16-17 week. To date of the first stir it is necessary to add 5 months that who gives birth for the first time, and 5.5 – vtororodyashchy. Estimated date of childbirth turns out.
5. The most reliable term of childbirth can be learned, having undergone ultrasonography. Ultrasonography reveals and specifies how many days last pregnancy. The expert learns it, measuring fruit parameters. On the level of development of the child calculates pregnancy term. Respectively, knowing how many days you in situation, it is possible to count date of childbirth easily.
6. When determining term of childbirth also other certain signs which are considered surely by the expert can help: heartbeat and movement of a fruit, change of size of a uterus, determination of height of a bottom of a uterus.
7. When childbirth comes nearer, there will be other signs able to define date of birth of the child: painless training fights, omission of a fruit in a basin, reduction of a uterus.