The point is there are a lot of things. One cannot make a certain diagnosis like vaccination death and be certain. It is the complete certainties that people make that is scary.
Exactly what you are doing. You made diagnosis without any information which is very unprofessional doc and is actually very scary. This was to completely rule out, in your own mind, a "vaccine" as the culprit which has been proven to cause myocarditis in many young people. This would not be "following the science" either.
I gave you a differential diagnosis. Would it could be. I did nothing like you or the vaxx anti death cult. Surely you can tell the difference. I offered three different things after you said the onus is on me. I would like to think you are not that narrow minded.