bladder problems after sex??

Hanna

after me and my boyfriend have sex, i always feel like i can’t hold me pee in and sometimes it comes out on its own. no i’m not talking about squirting or anything like that. i legit pee on myself and i have no idea why! the doctors always give me UTI medication for it but the results always come out negative for a UTI so i just wanted to know if anyone can relate and know why?