Painful regular periods, help!

Jessika • Late at night when all the world is sleeping, I stay up & think of you.
I've been off birth control back in May & immediately my cycles came regular. But the pain is intense. Even when I'm ovulating! It gets in the way of things I have/need to do. 
​When I was on birth control, I could bare the pain. I don't want to go back to them. I'm TTC. 
​What could be the problem?