One issue the GP has is whether all these heart problems are actually heart problems, or have we been barking up the wrong tree? Is it all a side-effect of something else? Yes, the echocardiogram I had in February showed an enlarged left ventricle, which came as no surprise, but, as he pointed out, it showed nothing else to worry about.
On Monday I have a fasting blood test, which will be to look for diabetes, anaemia and an underactive thyroid. I have had urine tests for diabetes, but he said that these tend to detect it when it's bad, not in the early stages.
Of course, it is easy to self-diagnose, but when I look at the underactive thyroid symptons, it all leaps out at me.
The one thing that has caused all the stress has been the uncertainity, the inability to put a name to what is happening. It may be an unpleasant name - but at least it is a name.