I took my second booster in Jan 2021. Less than two months later my heart was going all over the place. I had a one month holter monitor test. Diagnosed with cardiac autonomic neuropathy due to the Covid shots. My cardiologist and electrophsiologist said it’s very well documented in the journal of cardiology. There’s nothing that can be done. I am trying to get IVIG therapy. I was told from the time of being diagnosed you have approximately seven years left to live. We shall wait and see. My cardiac meds were just upped. I take them three times a day. The dosage was no longer controlling the arrhythmias.