Hi, I am 21, I'm really worried because I have had unprotected sex with my boyfriend for the first time and it has scared me to no end. I have taken an I-pill within 3 hours of intercourse but I still feel panicky. The thing is that I have a very irregular menstrual cycle and that's a cause of worry because I think my period was due anytime. Additionally, I'd like to mention that I have been sexually active for the past 4 months now but have always made it a point to have protected sex, my last period was very short and incomplete, is that a cause of worry ? Please help at the earliest .