Me too. A few days after the latest booster I had some really weird heart palpitations while resting, and I was feeling dizzy with chest/shoulder pain after some moderate exercise. I've stopped exercising which sucks, but will ease back into it. But there's a history of arrhythmia in my family (heart issue killed my dad at a young age), so that's probably a big risk factor, and I'm in the "young male" risk group.

I don't know if I should keep getting boosters or risk a potentially worse outcome from covid, which I haven't had yet, though I've been very exposed to.