Happened to me during the first 12 months and naturally resolved. I also suspected gallbladder but it turned out to be a minor irritation due to swelling / touching vagus nerve. Hope you have the...
Oh and something I learnt recently is to stay away from NSAIDs unless u crumble them in food as they are not great at stomach / oesop linings and may sit in the wrap part....
Typed on my phone while in recovery for unrelated surgery, so please forgive typos or just downright morphinemadness! This forum was a great help to me when I had mine done back in 2009 so to give...