How to accurately find out the day of conception

Many women who are preparing to get pregnant have finally achieved their wish after repeatedly and accurately calculating their ovulation period. However, they need to calculate the actual age of the fetus in the belly based on the actual time of pregnancy. Only in this way can they communicate with the doctor and make a detailed prenatal check-up plan for the baby. Therefore, women who have successfully become pregnant also have one thing that needs to be calculated repeatedly: preparing a method to find out the date of pregnancy.

How to accurately find out the date of pregnancy

1. Calculate the due date based on the expected date of delivery. Add 9 or subtract 3 from the month of the expected date of delivery to get the number of months of the due date; add 7 to the day of the due date to get the day of the due date. For example: The due date of pregnancy is July 17, 2008, and the estimated due date is April 24, 2009.

2. Calculate according to the date of fetal movement. Generally, fetal movement begins at 18-20 weeks of pregnancy. The calculation method is: the mother's due date for the first pregnancy = the time of active fetal movement of the baby, 22 weeks. The delivery date of a mother who has already given birth = the time of active fetal movement is 24 weeks.

3. Calculate based on the basal body temperature curve, take the last day of the ultra-low temperature section of the basal body temperature curve as the ovulation period, and calculate backward from the ovulation period to 264-268 days, or add 38 weeks.

4. Calculate based on the date of early pregnancy reactions. If the pregnant mother's menstrual cycle is not very regular, or the pregnant mother has forgotten the due date of pregnancy, but you still remember when you had nausea, vomiting and other early pregnancy reactions, then this method is quite useful and can be used to calculate your due date.

5. According to the results of B-ultrasound examination, during pregnancy, pregnant mothers will see a doctor for B-ultrasound examination, and they will see some mind-boggling data codes in the examination report. According to these data in the B-ultrasound report, the baby's gestational age can be estimated, and the due date can be calculated accordingly.

6. The delivery date can be roughly estimated based on the height of the uterine fundus. At the end of the fourth month of pregnancy, the height of the uterus is between the navel and the upper edge of the metatarsal bones (10 cm above the ischial tuberosity). At the end of May, the fundus of the uterus is 2 horizontal fingers below the navel (16-17 cm above the toes). At the end of June, the fundus of the uterus is level with the belly button (19-20 cm above the toes). At the end of July, the fundus of the uterus is three horizontal fingers above the navel (22-23 cm above the toes). At the end of August, the base of the uterus is located between the sternum and the navel (24-25 cm above the pubic region). At the end of September, the fundus of the uterus is 2 horizontal fingers below the xiphoid process (28-30 cm above the phalanges). At the end of ten months, the height of the uterine fundus returns to the height at eight months, but the fetal abdominal circumference is larger than at eight months.