HI, Mr. ANAND KUMAR , the kidney stones are the excess of mineral in body which are excreted out via kidney , but due to less water the become stone/crystal instead of a solution which normally should occur. The stone in your case can be because of 1) drinking less water, or 2) water in your locality has lot of minerals in it (hard water), 3) systemic calcium disorder or 4) taking minerals rich food in excess. The stone formation occurs in kidney usually and that where ur stone currently is located according to ur doctor. Their are different recommendation depending upon the state u live as will as the doctor u see, but normally most of doctors agree that that stone smaller then 4mm/.4cm can be passed in urine, with some pain while urinating, 1) FOR STONE TO PASS VIA urine u have to drink a lot of water, and if u are in the zone on hard water , please drink the mineral water available in market, and it will help you to pass the stone. 2) shock wave lithotrypsy is a method where a wave is send to ur kidney so that the stone shatters in will be easy for kidney to pass in urine, (its like glass shattering with vocal frequency/music) But for this it depends upon the urologists recommendation. BUT The best advices is to start drinking a lot of water, what will flush ur kidney (as u have seen how the waste is flushed in the commode with water pressure.)