I've had the influenza vaccine every year with no side effects. 3 weeks of chest pains on the 1st Pfizer (+emergency visit) and 1 week of chest pains on the 2n

I've had the influenza vaccine every year with no side effects. 3 weeks of chest pains on the 1st Pfizer (+emergency visit) and 1 week of chest pains on the 2nd Pfizer. ECG, x-ray and blood tests normal. Four different doctors: "we don't know what the side effect is, can't diagnose it, and we're seeing it quite often". Yeah that was concerning.