These protective measures do not guarantee that a person will not contract an infection, but they can significantly reduce the risk when used correctly. If you're trying to or trying not to get pregnant…. There is Sex while having period risk of infection when having oral, anal, or vaginal sex, or any form of skin-to-skin genital contact — even during menstruation. You can still get pregnant if you have sex while on your period. Having sex may make your periods shorter. Sexual Health Understanding the Male Climax Although it seems simple enough, the male orgasm is actually a Sex while having period process.