I get palpitations after each infection for at least 4 months. Severe ones, sometimes several per minute. But the worst was after the Pfizer vaccine. I doubt any cardiovascular inflammation could be considered light. Not all people suffer equally, but this is no flu. If you look at excess deaths, it's no joke, and they follow the curve of COVID-19 deaths pretty closely, so it's just undiagnosed COVID-19 deaths, literally.

I’ve experienced the same and paired with my anxiety, I get really uncomfortable it interferes with my day to day life. I’ve visited a couple cardiologists, both well regarded, and been told it could be inflammation and to ignore it unless its painful and to get more fit (BMI fine, but a bit sedentary). But I feel the medical community is lagging behind in this regard, sadly. Oh, and masks didn’t make much of a difference anecdotally here.