My dad had a problem with this back in the 1960s. He ended up with some impressive scars from surgery back in those days. It seems they have more options today.
You might try this. I've never had a kidney stone so I can't say if it works or not. But he says it does, it's easy, and it doesn't cost that much:
[YOUTUBE]http://www.youtube.com/watch?v=bVjLdBwTVjM[/YOUTUBE]
This guy needs to win the Nobel Peace Prize.
DL
I "learned" online that drinking (a lot of) olive oil would make kidney stones slippery enough to slide right out. It didn't.
... What on earth did they do before pain meds I will never know. There is not enough rawhide in the world to chew on in that instance.