Good luck...I passed one on a job site, thank god for running water urinals at the time. Also for not passing out or crying, I was leaning against the wall to do it. Kidney stones suck. First the kidney hurts...and you think it's your back. Then the pink streaks make an appearance, that's always exciting. Then it migrates to the bladder...for awhile the pain actually disappears while it bobs around. Then it makes the grand exit omgomgowowowowowommg.
edit: I drink tons of grape-cranberry juice now to help.