My experience was like Lauren's except I didn't have to got to the hospital. I was in pain (about a 6 or 7...it's been worse)when I did one of my flushes and the flush did help. The pain came back later and I did another flush. That's where I am now, just finished the second flush. I've never had a stone get stuck.
Several times a glass of apple juice with a tsp. of apple cider vinegar has helped stop the pain... Also, I agree with you What God designed in my body I'd like to try and keep.