I've been having sex with my boyfriend for several months, we use protection. And I've never had any pain at all. Well tonight we had sex for the first time in 2 weeks, with a condom, and we were going good for about 20 minutes. Then he took off the condom and then it started hurting me. It felt like he was hitting my cervix, but it's NEVER happened before, even in the same position. We changed positions and i was good for another 20 minutes, then it hirt a little again but went away after he stopped for a minute .And about a week ago, I was constipated and I spotted for an entire week, and had a yellowish discharge that was pretty heavy, but I only noticed it when I wiped. Is this some kind of infection I've gotten? Does anyone have any advice?