Approximately how many days is a normal pregnancy?
A normal pregnancy lasts approximately 280 days, typically calculated from the first day of the last menstrual period, with a detailed explanation as follows:
Pregnancy refers to the process in which an embryo and later a fetus develops inside the mother's body. Pregnancy ends when the fetus and its associated tissues are expelled from the mother. The gestational period is calculated from the first day of the woman's last menstrual period. Since it is difficult for most pregnant women to accurately determine the exact time of conception, medicine uses the first day of the last menstrual period as the starting point for calculating the estimated due date. A normal pregnancy usually lasts about 40 weeks, which amounts to approximately 280 days.
The due date may vary by up to two weeks, which is generally considered normal. It is recommended to attend regular prenatal checkups throughout pregnancy.