Answer:
There are no symptoms for kidney stones once they reach the bladder. They are effectively on their way out of the body through the urethra.
When lodged in the ureter on the way to the bladder, kidney stones generate two major symptoms. The primary one is moderate to severe pain felt in the lower back, which increases unless the stone passes. A second common symptom is the urge to urinate when the bladder is already empty.
The first sign, which is usually apparent only to those who have already experienced a kidney stone, is a small twinge of discomfort on either side of the lower back (the side the stone may form in). This can also be caused by thickening of kidney fluids, triggered by insufficient water intake or by certain compounds removed by the kidney.