Something up with the heart...?

Me

So, to this day one thing bothers that happened almost 5 years ago. I was peacefully sitting in my bed, when suddenly my left arm felt heavy and I passed out for possibly 2-3 seconds. I don’t remember if my heart had hurt, but I clearly remember having the heaviness in my left arm.

Anyone ever experience that? I didn’t go to a doctor because I thought it was just stress at the time, but I don’t think it was