Is having frequent uti's a sign he is cheating

I met my boyfriend when I was 21 and up to this age I never had a uti or any infection. The last 2 years I've had 3, including a bacterial infection, urinary tract infection twice. Now this makes me feel gross and disgusting and I always get depressed. Now living with no infections and then just within two years having so many I think he is giving me them (as men can carry but not have them), I don't know if it's paranoia or just blaming.

I am hygienic and always have been, wash after sex, etc.