UTI and Can’t feel my strings!

Okay, so I had a check up last week and everything was fine. I had my strings & everything. I had sex this week even though I learned I have a UTI. It really hurt so we went slow & such, but after sex I couldn’t feel my strings. I’m assuming I’m ok and they just moved because of sex? I’ve had my IUD in for 2 months. Also... UTI drink & food suggestions? It hurts 😂 Ps. Waiting before I have sex again. Dumb idea lol.