<s>[INST] Had a kidney infection and was hospitalized for 3 days, 4 weeks ago.  I took all my antibotics.  But now I am having pain again on my left lower back but I am not running a fever, last time I had a fever of 104 and chills.  Could this be kidney infection again with no fever? [/INST] HelloThanks for query. You were hospitalized for fever due to kidney infection and treated with antibiotics. Now you have pain in lower back which. In view of Pain in lower back with previous history of proved kidney infection in recent past, possibility of stone either in kidney or ureter has to be ruled out. Please consult qualified Urologist for clinical examination and get following basic tests done to confirm the diagnosis.1) Urine routine and culture.2) Ultrasound scanning of abdomen and pelvis. Further treatment will depend upon result of these tests and final diagnosis. Chat Doctor.  </s>