i had UNPROTECTED sex 1 day before my fertile window began, and my boyfriend came in me. i did ovulate because i often check my cervical musus. last night I felt this big pinch on the right side of my uterus. I had to literally hold it for a few seconds because the pain was so bad it lasted for a few seconds then went away. it was a pain that i never had before and it surprised me. well today im still having some aches on that side. i didnt think it was a cyst because im use to having them and this pain is so much more different. that do you think this could be? I'm currently 5-6 dpo