after sex my vagina burns when I pee? I just treated myself for a yeast infection with 3 day treatment. I waited until I had to symptoms of the yeast infection to have sex. It burned a little when having sex but after I went to pee and it felt like someone was holding fire to my vagina and the area around it. I don't know what's causing this. I just recently got on birth control so I don't know if that could have something to do with it. The burning stopped about 3 minutes after peeing and ever since then iv peed and if hasn't burned at all. Please help