I started having sex almost a month ago next week and the last time i had sex was a few days ago and it was unprotected. Im going to planned parenthood but i was thinking that i could get some answer before i go. When I posted this question, i was near or supposed to be on my period(don't remember exactly when my last period was). Right now im having cramps or at least i think they are, not painful but feels like what i would feel if i was on my period. But anyways, so i have been having this feeling for a couple days and I have yet to see any blood. This concerns me because i would have a feeling like i do now a few days before my period but it would only be for a day and then start up again when i was about to/on my period. Is it possible that since i started having sex in general that my cycle would kind of change. I do believe that I have yet to have irregular periods.