Many thanks for your answer. I have today been for another endoscopy - everything looks completely normal, hiatus hernia could not be seen - but it is small and sliding. No gastritis or inflammation but several biopsies have been taken - so that will have to be confirmed.
I then went back to the ward, and as soon as I drank some tea - pain at the les sphincter - then when I swallowed a bit of a sandwich - pain on every bite! I just don't get what's going on at all -and neither do the doctors. This is completely horrible. I think I need to have another barium swallow - to see if anything has changed.
I feel very little reflux at all, if any, it's just pure pain.
Anybody got any clues?