Pelvic pain during sex position

New to having sex. In my Mid 20’s. Second time I’m having sex with the same guy. I’m in a leg over shoulders (really to chest because I’m not that flexible) position but curled up into a ball in a car. (It was a nice cozy position though, like fetal postion feeling) I’m thinking he’s hitting my pelvic bone because it just starts hurting in my abdomen. It’s both left and right sides.

I’m prone to cyst. So Idk if I have a cyst. He kept going down on me to help. But I had to change position.

Idk if the angle he’s going in at is making him hit my pelvic bone. (He wasn’t really close to my chest, he was at like a 60degree angle if I can guess)Or I’m not turned on enough.

Please help me out with any advice or understanding.