UTI is not the same as STI

I’ve had a urinary tract infection (UTI) twice in the last one month — each time just a bit after 24 hours of penile-vaginal penetrative sex. The first incident occurred at 3:30 a.m., and the second at 12:30 a.m. when I felt this urgent urge to pee 3 times in 5 minutes. Each time, I chose to go to the A&E near my place because of my commitments that day i.e. needed to feel better quickly.