My 3rd Liver Flush was the most painful and produced the biggest, blackest, yuckiest stones. Prior to that, I had a little of that pain you described, but mine was tolerable. So, maybe your 3rd flush will rid your body of the pain. I don't have an answer for the pain you described in your arm area, but it could be related to your gallbaldder. Don't discount anything.
Doctors!!! Aren't they something. I could write a horror story about getting a tooth pulled yesterday, but I will save that for another post. I am still in shock. Oh well, someday all Drs will get what they deserve. My favorite saying is "What goes around, comes around!"