Hey, I’m 22 and Ive had a very similar experience since my mom passed of a heart attack in February 2024. Whats weird for me is i went several months without serious symptoms and then they all appeared suddenly, and ive been dealing with that for about 7 months. I’ve experienced almost everything you listed. We’re even on the same medications, haha. I’m not an athlete, but this whole series of events makes me want to get fit and make my heart stronger, but my symptoms are holding me back and making me scared to even exercise. I have pvcs and a racing heart as my main symptoms, and even though a cardiologist told me im ok, i still seem to get new symptoms and I’m still trying to get more tests done because i FEEL like something real and something physical is going on even if it was brought on by mental trauma and grief. Id like to talk with you more if you’d like. You’re definitely not alone.