so I had pain in my right and left sides after my first cleanse(and doing second this weekend)...it happened 3 or 4 days after my cleanse. I wasn't sure if I needed to do another cleanse or what..so I waitted and I ended up passing a really big stone the next morning and the pain was gone. I think it was stuck blocking the pancreas and causing back up in my gall bladder causing both sides to hurt. Much luck to you!