I am 32 years M. Had lower back and left abdomen pain .with doubt of stone done usg and found left kidney swelling but no stone traced. Dr. told that due to small size stone may be moved out of kidney or bladder. Swelling is due to it. Still after 4 days when painkiller effect goes mild pain come. Is it normal. Today done KFT test . All parameter including creatinine, uric acid are normal. Only electrolytes are slightly high or low. Should continue painkiller or any other test.