Best Wishes Steve.
I am also going through some health issues and having an endoscopy on Friday, I am expecting it to show stomach ulcers. It is ridiculous how a small amount of food can make me feel overfull, one apple, one slice of bread, one cup of soup.
I give credit to the NHS, they have given me all the tests you can imagine including blood pressure and three separate blood tests, I was surprised to learn that I am anaemic, maybe to do with giving up meat and fish some years ago.
We moan about NHS waiting times but when there is a real risk they respond