I had one last year that I battled for a few months without prescription meds.
While you are waiting, I also recommend cranberry juice (make sure it is real pure cranberry juice which is expensive and extremely tart) and mix it with something to mask the flavor if you need to or just do a shot. I found mine in the organic section of the market for about $5-7 for a small jar.
Some people also recommended apple cider vinegar to drink and bathe in (again real stuff with the mother root which I found at Walmart). The bath did nothing for me but it's a recommendation I found if you want to try.
I also used AZO which is over the counter which really helped alleviate the symptoms and also has a minimal antibiotic in it. There are several different versions including one with cranberry in it. It's only meant to give some relief to get to a doctor but I used it for well over a month as my main treatment. It's very inexpensive at Walmart.
I also found Cran Rx which is a cranberry gummy with d-mannose in it which is supposed to help as well as others have recommended. My local supermarket had that for about $10 a bottle.
The best advice I can give you and what really helped me was to stay away from caffeine like tea/coffee etc and acidic food like tomato sauce because it really irritates the bladder. Never really realized that until I got a really bad UTI and I found if I drank or ate something like that, I felt it and not in a good way.
Good luck and I hope you heal soon. There's not much that makes you more miserable than that.