My doctor put me on a zpack, naproxen and nasonex (mometasone) for a horrible sinus infection. I had facial pain, tooth pain andheadache. Now I have kidney soreness in the back. I am on prozac. What should I do?

Related? Nonsteroidal antiinflammatory agents like Naproxen may have adverse effects on kidney function, but this is quite rare considering the number of persons using these medications. Inform your doctor of your new symptoms to receive appropriate evaluation and care.
See an MD. You should stop the meds and see a physician to get a good check up.
Right Diagnosis. Stop meds and call doc who prescribed them. Make sure you have right diagnosis. You can't diagnose sinus infection without xrays. Consider seeing the sinus expert - ENT doc for assessment/treatment.