Generally, a fetus born after 37 weeks or more is considered full-term delivery, while a fetus born before 37 weeks is considered premature. After 37 weeks of pregnancy, the fetus's growth and development indicators are generally mature, so deliveries after 37 weeks are considered full-term deliveries. If the fetus's position is incorrect or the pregnant woman has some other special factors requiring a cesarean delivery, she can choose to have a cesarean delivery after 37 weeks of pregnancy.
How to calculate the ten-month pregnancy: The first method is to calculate based on the last menstrual period. This method is the most commonly used one. If your menstrual cycle is regular, with menstruation every 28-30 days, and you know the exact end date of your last menstrual period, then the simple way to calculate the expected delivery date is: starting from the first day of the last menstrual period, add 9 or subtract 3 from the month, and add 7 to the day, to get the month and date of the expected delivery. For example, if the last menstrual period is January 5, 2007, then the expected delivery date is October 12, 2007.
The second method is to calculate based on the date of early pregnancy symptoms. This method is suitable for pregnant women with irregular menstrual cycles or who forget the date of their last menstrual period but remember the time when nausea, vomiting, and other early pregnancy symptoms appeared. This method can also be used to calculate the expected delivery date. Since the average time for early pregnancy symptoms to appear is around the 6th week, the expected delivery date = the date of early pregnancy symptoms + 34 weeks.
The third method is to calculate based on B-ultrasound examination. This method is mostly used by doctors for diagnostic purposes during B-ultrasound examinations.
