Lower Abdominal Pain during Sex

Sarah
So lately every time my fiancé and I are having sex, I start to experience pain in my lower abdomen. We've tried different positions, and nothing seems to help it. It's gets to the point where we end up having to stop and both of us are left disappointed. Has anybody else experienced this with sex? And is there anything I can do to keep it from happening. The whole thing has made self conscious about having sex. And our honeymoon is a week away.