Question: what to do when you think you have a kidney stone?
Answer: Drinking water. Drinking as much as 2 to 3 quarts (1.8 to 3.6 liters) a day will keep your urine dilute and may prevent stones from forming. ... 
Pain relievers. Passing a small stone can cause some discomfort. ... 
Medical therapy. Your doctor may give you a medication to help pass your kidney stone.