Yea, so, i'm just going to be blunt about this. I had sex for the first time ever this friday. One night stand, i'm ashamed to say. Anyways, the guy didn't wear a condom, but he pulled out before he came. I know that pre-cum contains sperm and can get you pregnant as well. But here it is sunday and i've been having some cramps. I've never been 'regular' on my period (though it has been better these past serval months). I had my last one a couple of weeks ago and don't know if the next one will come as usual. I'm, like, really confused. Please, someone help! I'm really desperate.