Hi, I am Santanu, Male, 32, 84 Kgs. I have a pain in my back that I think is associated with Kidney. Experiencing this for last 6 months, since I started losing weight from 103 kgs. This is a dull ache. A certain numbness. Have it in both sides. more prominent in my right kidney than the left. Had done a blood urea and a USG. both came normal. that was 4 months earlier. I have been drinking 5-6 litres of water. But the discomfort has not disappeared.