So August 2nd was the last day of my period. My boyfriend and I had unprotected sex. I hadn't had a tampon in or a pad on all day because I wasn't bleeding or spotting or anything. So about an hour after we had sex I used the bathroom and I had just a little bit of blood. Spotting. So is it just my period or old blood. Or could I be pregnant because I know that when you have sex while you're pregnant you spot after wards. And I also haven't had this before and I haven't spotted at all today