Pressure on Bladder?!

Violet • 12/30/18 ❤️👶🏻
so i have been having sex for about 4 years now. and i feel like ever since i started ive had a bad bladder problem. ive asked some of my friends and they said its happened to them too. ive been to the doctor and told him everytime i pee i still feel like i have to pee and he says its a damn yeast infection or urinary tract and winds up giving me antibiotics. i dont have symptoms of an yeast infection its just pressure to pee. after im done peeing like 5 mins later i have to pee and so little comes out. it happens very often and its so uncomfortable and annoying especially when i have to go somewhere. so my question is does this happen to anyone else? what could it be? and no im not pregnant and no i havent had a baby. please help 💖🙏🏼