If you can’t find a gestational sac inside or outside the uterus and you keep bleeding, you may be having a biochemical pregnancy or have had a miscarriage. 1. Biochemical pregnancy: If the fertilized egg does not successfully implant, the woman will also appear positive in the pregnancy test. At this time, because the fertilized egg has not been fertilized, there will be the phenomenon that the gestational sac can not be found in the uterus and outside of the uterus; at this time, the woman will have vaginal bleeding, which may be accompanied by abdominal pain symptoms. 2. Miscarriage: When a woman suffers a miscarriage due to various factors, the gestational sac cannot be found inside or outside the uterus, and there is bleeding all the time. If the woman’s pregnancy is relatively large, there may also be pregnancy discharge, severe abdominal pain and vaginal bleeding. When a woman can’t find the gestational sac inside or outside the uterus and keeps bleeding, it is recommended to go to the hospital for examination and treatment in time to avoid accidents.