Stones vary from the size of a grain of sand to a golf ball and there may be one or several. The pain usually appears first in the back, just below the ribs. Over several hours or days, the pain follows the stone's course through the ureter toward the groin.
Pain stops when the stone passes.
Traces of blood in the urine. Urine may appear cloudy or dark. Blockage of urine from any cause. Avoid milk and milk products if you have had a calcium or phosphorus kidney stone. Avoid excessive sweating.