This is my first post as this is the number one problem I am having as well. Left shoulder pain, radiating up to the neck. At times I have NO pain or discomfort at all, and then other times it is horrid. I don't have a gallbladder, and only had a small hernia. My doctor is thinking irritation to the diagram from the band, and has recommended a CT scan to see.
I will watch to see if it is related to eating/drinking--that had been what I thought at the begining, but I am now 3 months post op