Yeah I’m sure it is, but it completely disappears when I stop eating gluten, could just be wheat but I haven’t experimented enough to say for sure, although beer really doesn’t agree with me now and it’s barley.That sounds rather like acid reflux. Might just be worth asking for an endoscopy to make sure that you haven’t got a bit of a hiatus hernia (where the top of the stomach pops up through the diaphragm). Omeprazole helps.