Heavy bleeding needs to be investigated and treated accordingly. A small amount of bleeding may occur when the embryo is attached to the uterus. Usually, there is no abdominal pain, and the bleeding may stop on its own. Heavy bleeding may be caused by miscarriage, uterine pathology, or abnormal development of the embryo. You can do gynecological examination: ultrasound, blood sampling HCG, progesterone, etc., and review the comparison if necessary. The general situation is good to consider fetal preservation, medication as well as general treatment, bed rest. Pregnancy is a natural process, but also the process of survival of the fittest. A lot of bleeding is difficult to successfully implant, the embryo can not develop into a fetus, the pregnancy can not be successful. When it is difficult to avoid it, you need to be mentally prepared as well as ready to cope with the miscarriage.