Welcome to HCM
We understand your concerns.
I went through your problem description. I appreciate your efforts. You are very good at your ability to read your body and diagnose body symptoms. But it also shows that you are health conscious, rather body ailment conscious. That leads us towards hypochondriasis
, a mental disorder. (Worrying that he has a severe physical problem which others fail to diagnose).
You must visited some good amount of physicians, I am almost sure. If not do visit a physician. Confirm yourself that you are physically stable with the help of all those ECG, blood tests etc. Then we shall conclude that what really troubles you. Please do not try to self diagnose, it can be dangerous. Please visit a physician and tell him about all the problem you are facing and he should advice you.
Hope this clears your doubts. Available for further clarifications.