how long does it take to have a kidney stone pass?
These muscles begin to spasm; they're trying to push the kidney stone out. This is what causes pain in your flank, back and stomach. Once the stone has come through the ureter, the pain usually abates. Anywhere from hours to weeks later, the kidney stone will pass, probably during urination. On average, stones take between one and three weeks to pass. Most stones that pass on their own will do so within a month of their first beginning to cause pain. If the stone doesn't pass within this time, it may be stuck, and could cause infection or other problems if it isn't removed.