Have you had a horrific reaction to the Covid vaccines?

Let me set the record straight, I am NOT an anti-vaxxer. I'm fully vaccinated and will get my booster. But I'm kinda scared because I keep remembering two weeks after my first Moderna shot, when out of nowhere while sitting in front of my computer, my heart started beating insanely fast for no reason. Felt like I was gonna have a heart attack! And I don't know if it was the shot or something else (Vitamin D supplements, admittedly bad posture when sitting sometimes). Did anyone have any scary reactions to the vax? I want the shot because I want to be safe, and make others safe. But that memory keeps coming back and I feel anxious about it.

Have you had a horrific reaction to the Covid vaccines?
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