Generally speaking, after 28 weeks of pregnancy is called late pregnancy, and we often say that the due date is calculated according to 40 weeks, the general time interval between 28 and 40 weeks can be called late pregnancy. Generally speaking, after 28 weeks, it is recommended that pregnant women have a checkup once every two weeks, and after 36 weeks, it is recommended that pregnant women have a checkup once a week to further protect the safety of the fetus and the mother’s body.