What Causes Pain After A Serious Kidney Infection?

I was recently hospitalized for a serious kidney infection and likely sepsis with 5 days in the hospital after a kidney stone got stuck in my ureter and got infected. This was 4 weeks ago. I have been very slow to recover. I have been pain-free, other than mild pain, for the last week and I do feel my energy start to come back. I have 4 more stones in my left kidney (two are 5 mm and 6 mm and the other two are small). I have been off all antibiotics for over a week. I just saw my urologist and my UA showed 1+ WBC dip, trace protein, hemolyzed trace blood dip, 10-20 WBC micro, 5-10 RBC mico, but no bacteria. Does this indicate any kind of infection? My urologist didn t say anything but at my visit before this (two weeks ago) my UA was similar and he said it was still ugly. I was still on antibiotics at that time. Also, I had a very serious episode of pain one week ago, but my urologist wasn t concerned as I didn t have a fever and the pain went away, although I was about to go back to the ER. It felt very similar to the level of pain from when I was in the hospital. My fiancé wants to get a second opinion. Any information or advice you can provide will be very much appreciated. Thank you!