Usually, slight bleeding will stop on its own. Sometimes bleeding may become serious and pose a risk to mother and fetus.
Many pregnant women have vaginal spotting or bleeding in the first 12 weeks of pregnancy. If there is vaginal bleeding early in pregnancy, a doctor will perform a pelvic exam. A blood test may be done to measure human chorionic gonadotropin (hCG), a substance produced during pregnancy. As the pregnancy progresses, hCG levels increase, so there may be more than one test. Ultrasound may be used to find the cause of the bleeding.
Sometimes the cause is not found. Special care may be needed if there is bleeding since there is a higher chance of going into labor too early (preterm labor) or having an infant who is born too small.