Kidney Stones Support Group
Kidney Stones are solid crystals of dissolved minerals in urine found inside the kidneys or ureters. They vary in size from as small as a grain of sand to as large as a golf ball. Kidney stones typically leave the body in the urine stream; if they grow relatively large before passing, obstruction of a ureter and distention with urine can cause severe pain most commonly...
You can try some home remedies.
Daily massaging and tapping the local area on pain.
And do some foward bending stretches while breathing in and out really slowly.
If that doesn't work, maybe try some herbal formula, like Dissolve Kidney Stones from Working Herbs. http://apps.facebook.com/workingherbs/product.php?id=30
They have some good case studies...just read more about it.