I am 17 turning 18 in about two weeks and I had sex with my boyfriend unprotected and I was going to get Plan B but when I went the nurse told me that I shouldn't worry and I'm not pregnant because I had my period and I've been hearing all these things saying that the precum stays in you for five days but then other people are saying that it is very unlikely. My period was regular when I got it and my boyfriend didn't finish inside of me. I am having cramps but they are not in my lower stomach but all around which I've been having for a while. If anyone with experience could help that would be great. Thank you