During the last month of pregnancy, each fetus does not gain exactly the same amount of weight, but it is basically in the range of 1-1.5 pounds. The exact number of pounds gained should be calculated by combining the fetal biparietal diameter, abdominal circumference and femur length. After the fetus is full term and the due date is near, the placenta blood supply decreases and the physiological function decreases, so the weight gain is relatively slow. In early pregnancy, fetal development is the slowest in the entire pregnancy, during which the fertilized egg divides to form an embryo, which then develops into a fetus. In the second trimester, the fetus gradually accelerates its growth, starting from about 16 weeks of gestation, gaining about 50g per week, 100g per week after 22 weeks, 150g per week after 26 weeks, and then enters a period of rapid growth, gaining about 200g per week. During the late pregnancy, you must not exercise strenuously, do not do dangerous movements such as splitting, and pay attention to the intake of vegetables and fruits to avoid hemorrhoids caused by constipation after delivery. If you experience regular pain in the lower abdomen or vaginal flow, it may be an aura of labor and you should be hospitalized for observation.