Yes- a lot of people actually have heart attacks and don't realize it. Sometimes they are small enough to just hurt in your arm for a moment, or make you feel slightly sick, and people just shrug it off. Surprising, eh?
Really? What is it? Atrial fibrillation? Ventricular fibrillation?
If what you're saying is true, I guess I might have had a few heart attacks. I just personally don't like the idea of it being called a "heart attack." Whenever I hear about heart attacks on the news, someone has either collapsed, been taken to hospital and died. I haven't collapsed or died. I have, however, gone to hospital to check out my condition with an electrocardiogram after seeing a general practitioner. I didn't collapse or faint.
I had another "waking up" experience about a year ago when my heart began beating way too fast, and irregularly one night as I was trying to get to sleep. It was difficult to breathe. I felt as if I would pass out at any moment. I truthfully thought I was going to die. My life didn't flash before my eyes. It was the life that I hadn't lived. The things I hadn't done. Hadn't learned.
(don't worry, I had my heart checked out and it's not a life threatening condition, just an annoying one)
I've had atrial flutter and it's pretty similar to what you're describing. My pulse is faster than normal but it appears to skip beats and/or stop every few seconds. I've had it a few times in recent years. It happens every few months.
It has always spontaneously reverted back to a sinus rhythm, but I've been told that the longer it happens, the greater the risk of a stroke. It can take anything from three to twenty hours to spontaneously revert back to its normal rhythm.
I hate going to sleep with it, but I have had to tolerate it a few times when the atrial flutter started at the wrong time of the day!
I've never thought of this as a "heart attack" because whenever I think of a heart attack, it means a cardiac arrest and my heart didn't stop. It just started pumping in an irregular and abnormal manner.
To clarify my reason for commenting, however, my atrial flutter isn't what I regard as being possibly my "heart attack." There have been times when I have felt an unusual pain/discomfort in my arm or back, sometimes accompanied by a sense of weakness. This didn't happen during my atrial flutter episodes. When I have had atrial flutter I felt quite normal in spite of my palpitations. There was no discomfort in my arm, chest or back. The only difference then was the beating of my heart. I felt just as strong.
In these times of unusual discomfort, my heart is pumping normally with the sinus rhythm.
The idea of having a heart attack makes me uncomfortable because I'm actually quite skinny and can't imagine having clogged up arteries. But then again, I haven't been having regular exercise.