I lost my virginity two days ago to a man that I've known and trusted for a long time. Yes, we used protection and yes, he is clean. I just started my period yesterday although I wasn't suppose to start for another week. My periods have always been very regular, so I don't know why this would happen? Would losing my virginity have caused it to come early? Plus last night, I was hit by a wave of nausea and very watery diarrhea. I am having horrible cramps and woke up periodically throughout the night to run to the bathroom. It even got bad to the point where I had to call off work this morning and I never do that. I don't understand what is wrong? Any help or suggestions would be amazing. Thanks!