Hello, I Have Been Suffering From A Very Nasty UTI

Hello, I have been suffering from a very nasty UTI and have been on 3 different antibiotics. Just when it started getting better, I started itching and burning (like a yeast infection), so I went and bought a tube of Monistat 7, which I am about to be through with. I have swelling and redness and it is still itching and burning. Is there anything else that I can purchase over the counter that might help?