Hot Crotch 🔥💥🔥

Sooo, I’ve been with my boyfriend for a year now, we live together, and whenever we have sex and he finishes inside of me, it is EXCRUCIATINGLY PAINFUL and a severe burning sensation too. I’m on birth control (the pill) and he doesn’t normally finish inside of me. Normally he finishes on my body. It doesn’t hurt or born when he does this. I know an easy way to not let it hurt me anymore is to not let him bust inside of me but I want to know why it hurts so much. We are both faithful, we both have been checked, we are both clean, and I don’t have any infections.

Some ideas that I have about what could possibly be the issue:

•My Ph balance is off. (Maybe because of my diet, I drink a lot of coffee because I’m a nurse assistant. But otherwise I eat pretty healthy)

•His semen is too acidic

•I’m allergic to his semen* (highly doubt it)

•too much friction during sex

Or it could be more than one thing all at once .

Please someone give me some insight of what they think or if they have ever had this happen to them or someone they know before. Thanks!! ❤️❤️❤️❤️❤️❤️❤️❤️