SEVERE flank and kidney pain both sides, excessive urination & thirst for 2months. Drink 100 ozs+ water/day. Urinate 20+/day. Norm urine & blood HELP!!

See urologist. Assuming you are not diabetic, this requires specialist's help. There is a condition in which one does not produce the hormone to control the water loss, but it is not associated with pain. One other thought is that you may well be drinking too much water for psychologic reason and this can make you ill.