Pregnancy usually takes 280 days, and the entire pregnancy is counted as 280 days. Because there are 7 days in a week, every 4 weeks is a month, which means that the due date is reached at 40 weeks of pregnancy. Pregnancy is counted from the day of the last menstrual period and not based on the time of sexual intercourse. If you are pregnant, you can determine whether you are pregnant by using a pregnancy test after 5-7 days of delayed menstruation, and if necessary, you can also go to the hospital to have a blood test. After pregnancy, you should go to the hospital for regular maternity checkups to monitor the development of your baby at any time. You should also pay close attention to your diet, eat more fresh fruits and vegetables, and eat more highly nutritious food. The first thing you need to do is not to eat spicy, stimulating or too cold food, and pay attention to moderate exercise after pregnancy to help smooth delivery.