If you experience a small amount of vaginal bleeding in the third trimester, it is often directly related to exertion or sexual intercourse, so it is recommended that you go to the hospital for an ultrasound examination as soon as possible to find out if the fetus is still alive. If the fetus is still alive, bed rest and active anti-fetus treatment will help to relieve the bleeding in most cases. If the ultrasound reveals that the embryo has stopped developing, the pregnancy should be terminated as soon as possible. Otherwise, if the embryo dies in the uterus for too long, it will cause blood clotting disorder, which may cause massive bleeding and endanger the life of the mother, so terminate the pregnancy as soon as possible. It is recommended to find out whether the blood count, platelets and clotting time are normal, and then give treatment according to the results.