Well i have had the experience of having kidney stones. Talk about very painful!! I believe i got them from having a UTI (Urinary Tract Infection). So after lots of water and lemon juice they passed.
On another note i have a friend who is doing ministry and if you could donate some $ i know she could use it to go on a mission trip. Here is her blog http://angelinakerns.blogspot.com/ Check it out!