hi there, you have obviously visited a urologist
and the stone must be small enough for him to suggest that it will pass out in urine.,The medicine that you have been prescribed are only symptomatic and will not help in dissolving the stone. Flexon
will help to relieve the pain. The pain tht you are experiencing is due to the spasmodic action of the ureter
as the stone is moving down or is pushed down so it will be there till the stone is expelled out. In the meanwhile you can take plenty of fluid as advised by your doctor and hopefully the stone will pass out fast . Take care.