AsheDina, are you sure you're really passing a kidney stone?
The reason I ask is because my brother in law, who always had health problems, also thought he was passing a kidney stone about two months ago. It turns out he wasn't passing a kidney stone, but that his kidneys were failing. Anyway, to make a long story short, he now has to be on dialysis, and he's on a list for a kidney transplant.
Please go see your doctor, or go the ER immediately! I'll pray for you.