After pregnancy, there is no significant change in blood pressure. The normal blood pressure is 90-60 mmHg diastolic and 140-90 mmHg systolic, and it is normal if it is within this range. In late pregnancy, due to the prolonged supine position of the pregnant woman, the enlarged uterus compresses the inferior vena cava, which suddenly reduces the amount of blood returned to the heart, i.e., the amount of discharge, and postural hypotension occurs. At this time, the pregnant woman can change her side position and her blood pressure will quickly return to normal. If the blood pressure rises in late pregnancy, or if there is proteinuria at the same time, you have gestational hypertension syndrome and need to be hospitalized as soon as possible.