I had chest pains for the first time in my life in 2021 and I’m in late 20’s. Doctor couldn’t find anything. Felt much better after a month. But it came back after getting a booster. I had COVID confirmed in 2020 with no such issues. For me, as far as i can tell, the chest pains are more correlated with the vaccinations. I’m rather grumpy at the idea of getting additional boosters.
I'm sorry you had that experience with vaccines. I know it won't make much difference to you personally, but the truth is that these sorts of chest pains and heart problems are far more common in immune-naive people who are infected with covid than in people who get vaccines.
In fact, there is more and more data every day the EXACT opposite is true.