A: There's a lot of controversy about the vaccine. Some schools of thought will say that it's terrible for everybody and complete poison, while other schools of thought will say that there are absolutely no side effects. I think the truth is somewhere in the middle.
I will say that cardiac issues have been reported as side effects of the vaccine, especially in men. So, perhaps this could be a reaction, especially if it happened shortly after you had shot.
I would look into consulting a naturopathic doctor or functional medicine doctor to see what might be leading to these symptoms. I belong to a few practitioner training groups that talk about various side effects related to different illnesses, supplements, medications, and vaccines. It is certainly plausible, and perhaps you will find some answers if you work with a functional medicine practitioner.