Okay so my boyfriend and I had sex today, and after it was done I got really bad cramps. They feel almost like period cramps and I can't move, laugh. It's painful to get up and walk. This happened last month too, and I realized they were both around 2-4 days after I had ovulated. Has this happened to anyone else?! Should I be concerned?! When we have sex Im either on top or he is, and he does go a bit hard and deep but it's only hurt me these two times. So I'm convinced it has to do with ovulation. Opinions? Also, last time the pain was still there the next day but not much. & we do use protection.