I have the same problem after sex with my dp, he always seems to hit my cervix. It?s painful and I very often bleed afterwards, I get that same period type 'ache'.
I have been to my GP as I have had treatment for cervical cancer a few years ago (before I met dp) and I was worried that it might have returned. All that the doctor could tell me was my cervix is very scared from the treatment and it is in a strange position so she could see why it would cause problems but she couldn't help me other than to advise us to try different positions to see what one doesn't hurt.
We of course have tried this but the only position that doesn't hurt is one my dp isn't keen on.
Our 'love life' is really suffering, he is too scared to do it because he doesn't want to hurt me, and the only position that doesn't hurt is one that he gets little pleasure in. I do try to satisfy him in other ways but I just want to be able to make love to him the way he wants and to enjoy it!
Any advice?