A woman’s gestational month is usually calculated as 4 weeks, so 17 weeks of pregnancy represents 4 months and 1 week. A woman’s pregnancy lasts for a total of 280 days, i.e. 40 weeks. For statistical purposes, each month is usually counted as 28 days, and the months of pregnancy are counted as 10 months. The first 3 months belong to the early stage of pregnancy, which is an important period for the development of the fetus, so you should avoid taking drugs, stay away from radiation, keep a good mood and prohibit sexual intercourse; the second 3 months belong to the late stage of pregnancy, when you should pay attention to weight control, exercise properly, count fetal movements every day and be alert to the occurrence of preterm labor. During pregnancy, pregnant women should pay attention to regular maternity checkups, maintain a good routine, eat a balanced diet and manage their weight reasonably. When the expected date of delivery is approaching, pregnant women should prepare the maternity bag and simple baby products in advance, and go to the obstetrics department in time when the signs of labor appear.