OK sex durring pregnancy CAN NOT cause an abortion, abortion's are caused by a vacuum like thing that a DR inserts into your cervix that removes the baby from your body!!! That is the only way that any thing can cause an abortion!!!! Sex is 100% safe durring all points of pregnancy. UNLESS your DR requests that you dont for medical reasons. Also sex during the last month of your pregnancy your partners sperm can enduce labor, but that is NOT a bad thing. So FYI Sex durring pregnancy CAN NEVER cause an abortion only a DR at an abortion clinic can cause an abortion, and the only way sex could harm the baby is if your DR tells you not to!!!