4th uti in 3 months and they all line up with meet weekends... help

so my body is officially rebelling against the LS. i'm 39, never had a uti til last year, and now i've had 4 in 3 months, each one within 48 hrs of a meet or club night. the pattern is too obvious to ignore. doctor in auckland has put me on a low dose prophylactic abx for now but ngl i don't love being on antibiotics constantly. i pee before and after, hydrate like mad, we use condoms with anyone new, all the usual. is this just what happens to bodies in our 40s or am i doing something wrong. anyone got actual practical things that have helped beyond "pee after sex". also wondering if it's position-related or something specific to longer sessions that we don't do at home. open to anything