I have been taking birth control for a long time for my PMDD. Usually when I take the placebo pills I don't actually get my period until I start back up on the regular pills. Such was the case again. My boyfriend and I decided to have sex while on my period but didn't use protection. I have stopped bleeding now, but should still be on my period. Is that normal after period sex? I'm afraid to take a Plan B pill because I know that it screws with the hormones during your period. What do I do? Am I normal? Will my period start back up again?