###Human: Can bleeding after sex during pregnancy be due to miscarriage? ###Assistant: Hello. It could be a miscarriage and could be spotting in early pregnancy as miscarriages are usually confirmed on ultrasound scan and bleeding is heavy with abdominal pain and it usually takes a few days before getting stopped. I would suggest you to repeat a pregnancy test and see if it is positive or not because if pregnancy is miscarrying then there is a possibility for that to become negative due to falling levels of hCG.