Where is the pain located? If it is in your lower ribcage and you feel pin in your upper back like under your shoulderblade, it may be gallstones/gallbladder problems. I had 4 very bad attacks from stones becoming lodged, so be prepared that this may happen with a cleanse, but if you follow the liver and kedney cleanse first and clear the way for the stones, you shouldn't be in pain when you pass them. Everyone is different, so try it, but if you have too much pain, don't wait and suffer, go see a doctor and get the ultrasound to see how bad the stones are. I waited too long and developed severe Pancreatitus. I wish I knew all about flushing before, and I could have avoided the GB removal. I have more problems now then before!