How Long Can Cystone Be Taken For Kidney Stones?

Hi, i m consuming Himalaya cystone for two months for the small kidney stone found in my sonography report. The first month I had it twice a day. And after finishing it almost after 10 days I started to consume it again due to the pain. I m irregularly having the doses. Is it normal to consume this medicine for more than one month because my doctor had prescribed it for one month only. Also, though m having this medicine I get pain after few hours. What shall I do?