Yes. A lot of people think that if a girl has sex during her period, she can't get pregnant. But it is possible for a girl to get pregnant while she is bleeding. This can happen for a couple of reasons: Having unprotected sex at any time is risky: Along with the chance of getting pregnant, you can. "Is it safe and normal to have sex while you have your period?" Kathleen, 15, Astoria, NY. Having unprotected sex at any time can be risky, and that includes during your period. how they feel about period sex and how those feelings play out in their sex lives. clots coming out while we were having sex, Very Real About Period Sex.