Summary: At the end of pregnancy, expectant mothers are always uneasy, worried that \”unloading\” will suddenly come and they will not be able to cope with it. Understand the signs of labor in advance so that expectant mothers can be fully prepared for childbirth. Expectant mothers know that the due date is not the exact date of delivery. According to scientists, only about 5% of women can give birth on the expected date. It is difficult to accurately determine the time of conception