Thanks for the advice - I should have pointed out that I have a very weak LES with minimal pressure being shown in the manometry testing. I will look into food allergies as I have never considered this before as I always took it as acid/reflux given that it just came along 1 day and stayed.
I was originally checked for a raft of things after I was admitted to hospital for gastritis including gallbladder, gall stones, Pylori, liver failure (this was interesting as testing showed some issues that were later attributed to omeprazole), allergic reactions. But I do not remember coeliac disease being tested.
I also found out at the same time I have hyporeninaemic hypoaldosteronism leading to hypotension - this was another story and does not hand in hand with refux as I need a full portion of salt in my diet (to the point where I have to drink salted water) and I also have to ensure I do not lose too much weight as the liquid in my body is important. Hence when I lost weight after the nissen I was passing out frqeuently and having some big issues with partial blackouts.
Anyhow I did enjoy eating what I wanted last week, just suffering now.