Many female friends who are pregnant for the first time may not know what to do for a period of time after pregnancy. Moreover, there are many things that women cannot do after pregnancy, and they also need to pay attention to rest to maintain physical stability. Many women are curious about their due date, so how to calculate their last menstrual period based on the due date?
Firstly, after confirming pregnancy, the doctor will inform the pregnant woman of a due date, which is calculated based on the first day of the woman's last menstrual cycle. The natural time from conception to delivery is approximately 266 days, and conception occurs 2 weeks after menstruation. Therefore, the period from the first day of the last menstrual cycle to the 280th day is the woman's due date. However, due to individual physical conditions, there may be differences in the expected delivery date. The date estimated by the doctor is only a rough number, and generally speaking, giving birth within 2 weeks before and after the expected delivery date is a normal phenomenon.
In addition, if some pregnant women cannot remember the time of their last menstrual period, they can roughly calculate based on the fetal movement date. Fetal movement is usually within 18-20 weeks after pregnancy, and adding 20 weeks to this time can estimate the estimated due date.
Finally, calculating the due date based on the last menstrual cycle is generally an effective method, so mothers preparing for pregnancy must remember their last menstrual period.
