<s>[INST] My kidney is swollen and my whole lower back hurts, I have been drinking lots of water and cranberry juice. What else can I do to get better, and does this sound like a kidney infection or something more serious. Also I had been drinking alot of soda before this happened [/INST] HelloThanks for your query, based on the facts that you have posted it appears that you have swollen kidney with back pain which suggests presence of stone either in kidney or ureter. Please consult qualified Urologist for clinical assessment and get following basic tests done to confirm the diagnosis.1)your routine urine test and urine culture done to find out the organisms causing this infection and antibiotics to which they are sensitive to.2)Ultrasound scanning of abdomen to rule out presence f urinary stone, Please take broad spectrum antibiotics like Čeferin along with urinary antiseptic like Nitrofurantoin twice daily and urine alkalizer thrice daily. Later on switch on to appropriate antibiotics as per culture report. Get the prescription of medicines from your family Physician. Ensure to Chat Doctor. To keep your urine dilute This will help to control dysuria. </s>