<s>[INST] I was treated with Levofloxacin for a kidney infection. I finished the ten day treatment two days ago. The infection was in my right kidney. Today I began developing pain in my left kidney accompanied by occasional stinging pain radiating up and down my mid to lower back region. Could I still possibly have an infection and could it be in my left kidney now? [/INST] Hi sir/madam would like to know what infection did you have in the right kidney, was it due to a renal stone or any bacterial infection or so. According to the information you have provided I believe you must be having a renal stone which is causing on and off pain. I would recommend you to get an ultrasound done under your family doctor supervision and any further investigations if required. Thank you </s>