Uti😭😭

so most of the time I get a uti me and my boyfriend always use protection and I always pee before and after sex , when I first got a uti people told me to use lube which I have since but I keep getting utis it’s so annoying so irritating down there and always burns or stings when I pee🙄🙄 trying to get an app with my doctor but does anyone know how to stop this from happening ????