Two women have told me this also.
I had trouble walking the pain got so intense with my first stone. At that point I had my wife take me to the E.R. and nothing in my life has ever felt so good as the morphine injection the nurse gave me.
Drinking lots of water will help flush the stone, but the pain will increase until you pass the stone because the fluid is backing up behind the stone. If you get sick of water lemonade is good too.
Everything Hycomp said is accurate.
Good luck-- I feel for you.