Did he hit it to hard?!

So I recently had sex with my boyfriend where he laid me on my stomach across the bed but my feet were hanging off so I could stand up. While we were getting into it, out of nowhere I felt this pressure like pain in my stomach or abdomen area. I kept telling myself that it was alright and it’s just because he was going in deep and just let him continue. In middle of it my boyfriend also asked if I was ok and I found out why because he said when he was going deeper he felt himself hit something. So my question is what exactly could he have possibly hit, am I gonna be ok, and how do I get rid of this pain? I know I can’t be the only one who’s experienced this 😂🤦🏾‍♀️