So about a month or so ago was the last time I had sex. It was unprotected but he pulled out. I don't think (or at least I hope) I'm not pregnant.. But it is always on the back of my mind. Yesterday, about a month after the sex, I had just a little bit of brown blood looking stuff on my toilet paper. I thought it was my period, but it only lasted a few hours.. Can any one please tell me what this is? I can't figure it out, there was no cramping and the blood has stopped. I'm not due to get my period for another week. Please help soon!