I have a question and to say lightly I’ve never missed a day, I am sexually active im 18 and he pulls out usually

This past year I have recently been put on birth control I’m not sure what type exactly but whenever me and my boyfriend have sex usually more than once in a day I get a horrible horrible sharp pain in my lower right side sometimes left, that literally causes me to curl up into a fetal position and sometimes sweat and shake lasting from 5 minutes to maybe 10

I’m not sure what’s causing it exactly and before you ask yes I’m going to talk to a doctor to figure it out

But has anyone and I mean anyone had this happen before ?? And what did it turn out to be

Please I’m desperate for anything