I am also experiencing awful, monthly pain (though it doesn't sound as bad as yours) and I think it's when I'm ovulating. I also had a c/s and my AF returned two months ago. Before AF returned I had a horrible pain that felt like my uterus was swollen and it was a constant ache with no relief. I went to a GP and she said it was prob a UTI. But then a month later I got the pain again. And recently I had it again. I'm also thinking it's time to go get it checked out again.

I hope you can get some answers. I'd love to know if you do get an answer.