Sorry to hear you are feeling so bad. I did the Liver Cleanse recommended by this site by Dr. Hulda Regehr Clark, following my own parasite cleanse the day before I started the actual flush. I used two tsp. of Black-Walnut Tinture before dinner. My first flush yielded no stones and left me feeling like poop the second day after the olive oil (Maybe all those toxins). But my second flush was successful. Multi green stones, despite no gallbladder.
Please remember that pain is our body's way of warning us that something is not right, so listen closely and carefully. Do what you think may work for now to see if it eliminates the pain, but don't continue to ignore the pain if it remains or gets worse. I think then it would be the most appropriate thing to do to see a physician, for some basic labwork since it my not be your liver at all...so many other organs lie in that area and can also defer pain signals to other parts of our body, as you described your should pain. You may need a medical professional to help you sort it out. Good luck and keep me posted.