Weird, cause your symptoms say UTI. Did the doctor do a urine culture test? When you have pelvic pain and feel like you have to pee a lot but when you try to go, only a little comes out, it's classic UTI.
Wait till you miss your next period and take a test.
I went to the doctors n I don't have that.
That sounds like a UTI, urinary tract infection. You need to go to the doctor and get some meds to clear it up. You can't fix it on your own and if you let it go too long it could turn into a worse infection. UTIs are very common after sex, so it's not surprising that you got it.