I am insanely prone to UTI and always have been (to the point where I pee in a cup almost daily to monitor cloudiness so I can catch it super early)
cranberry juice (not cocktail, 100 percent...you may wanna mix it with water since it is really bitter) and an absurd amount of water usually hold mine off if I catch them early.
Seriously, drink as much water as you can handle.
good luck!