I'm 27 and experienced a lot of chest pains and skipped heartbeats earlier this year. One night I stood up quickly, walked a bit then lost consciousness (low blood pressure), hit my head on the way down. I had an ambulance to the ER after that, they didn't find anything wrong during that visit.

I was referred to a cardiologist, had a holter monitor, ECG, and stress test. None of those turned up any issue.

Going by what I've read about this online I suspect I may have had myocarditis from a case of COVID, but I think that would only show up on an MRI, not the tests I got. Luckily the palpitations and chest pain have mostly gone away over the past couple months.

In relation to speculation about COVID and myocarditis cases elsewhere on this page: I doubt my case will be reported because the association between COVID and heart problems didn't seem to be on the radar of any of the doctors I saw.

Arrhythmias are perhaps the most specific indicators that you should see a cardiologist, but chest pain and/or shortage of breath on mild exercise could well be caused by a heart problem. These are some of the symptoms of myocarditis, among other things.

I went to the doctor because of general shortness of breath all the time, heart rate spiking during normal activity like standing up, palpitations out the wazoo, and general fatigue.