Burning sensation and feels like I always have to pee after sex?

Help! I'm 22, sexually active with a monogamous male partner. After we have sex, the next couple days it feel like I have to pee all the time! It kind of burns too, and feels like I can't hold it. Almost feels like I'm turned on? I don't feel like it's a UTI because it goes away after a couple days and it's only after we have sex. Sometimes it happens when I haven't had sex, but again it lasts for a day or two and then goes away. We don't really have rough sex either so I don't know what it could be. PLEASE HELP. it's so annoying and painful. Thank you!!