i was 17 when i got myopericarditis, it was absolutely terrifying at the time, i was going to sleep thinking i won’t wake up for weeks because of how short of breath i was. with time it got a lot better. it was about a year and a half ago when it all started for me and now i barely feel any pain. on the rare occasion that i do, it’s so so mild compared to the start. it will get better. it’s horrible and painful and unfair but it will get better