After the third trimester of pregnancy, embryonic abortion usually does not occur. In most cases, the fetus will grow normally as long as the blood supply to the placenta is good; there are some cases that may lead to embryonic abortion, such as when a woman suffers from placental abruption due to trauma or preeclampsia due to gestational hypertension syndrome, eclampsia and perinatal heart disease. Embryonic abortion can also occur in cases of severe medical complications. If a woman is pregnant, she should have regular checkups and observe the changes in fetal movement. If she has pregnancy complications, she should have regular checkups and take medication under the guidance of her doctor to keep her condition in a stable state to ensure the growth and development of the fetus and prevent embryonic abortion.