When my boyfriend and i have sex and he ejaculates in me i have a uncomfortable stinging sensation. It worsens if i pee straight after and lasts for a hour or so. He no longer ejaculates in me because of the stinging. But i wanted to know if it would have to do with his semen reacting with something on the inside of me and can this problem be fixed as it would make making children a uncomfortable experience for the both of us.