Pain during intercourse?

Me and my boyfriend have sex once or twice a day most of the time and I've never really had issues with pain up there but I've been worried because lately every time he goes in there's always a burning sensation in the same area every time and on my right side it feels like. Once he reaches a certain point it goes away but it's hurt so bad to the point where I feel like throwing up so we started using lube. It feels so much better but I still feel the burning and stinging feeling just not as bad and then it goes away all together when he stretches me out a little more (sorry tmi 🙊).

Has anybody else had this? I think it might have to do with how much we're having sex but I'm not sure cuz I've waited a couple days before and it still hurts. I'm turned on first and everything so I'm getting worried now