Bio-chemical pregnancy bleeding may be around 30-50ml and lasts for around 3-7 days. Biochemical pregnancy is a process in which the sperm meets the egg to form a fertilized ovum, but fails to settle in the uterine cavity or the trophoblast cells die naturally before it develops into an embryo. The amount and duration of bleeding in biochemical pregnancy is similar to normal menstruation or slightly more than normal menstruation, the bleeding amount is around 30-50ml, the bleeding days are around 3-7 days, and the bleeding amount and bleeding days may be prolonged under abnormal circumstances. There is no special treatment for occasional biochemical pregnancy, change sanitary napkins diligently during the bleeding period and pay attention to the cleanliness and hygiene of the pubic area, but if biochemical pregnancy occurs after each pregnancy, you should go to the hospital to check the cause and then treat the symptoms.