uti symptoms but no uti

i’ve been prone to utis since i was little and just recently they’re coming back frequently. but not really. i feel like i have a uti for a couple days after sex but doctors always do labs and i don’t have any bacteria in my urine to cause utis or symptoms. does anyone have any tips to help relieve them besides always peeing after and drinking lots of water? azo gummies haven’t worked at all if that helps

edit: this time it might be a uti my urine smells a little foul for the amount of water i drank. but please tips and advice still help for next time!