I've had UTIs before, once I got antibiotics for, twice they went away after a dew days. But a few days ago I started to get one again and I was really hesitant to go to the doctor, so I thought I'd see if it went away. After a couple days I tried drinking cranberry juice as it hadn't gone away yet. A couple days after that I decided to go to the doctor, and today I went and he confirmed I had a UTI and put me on Alprim. That was about 6 hours ago but almost as soon as I had left the doctors I started getting sharp pain in my lower left back, just under the ribs. Then it got more and more painful. Now it's spread to my side too and it's creeping down my left groin. It's pretty intense pain and I can't take any more pain killers.
Should I be concerned? Obviously the antibiotics aren't in effect yet, so will they fix this pain? Or is this a sign of something more serious.
Side note: the pain keeps making me almost gag every now and then. But I know what kidney stones are and are like and I'm 99.99% sure it's not that as it's not THAT painful.