For what it's worth, here's my experience.
No actual pain, just a dull, warm thing like something stuck in my windpipe, but unchanging,no matter what I tried to do to relieve it.
Absolutely unconvinced about the heart thing until enzyme results confirmed.
Sat there all day in bed thinking, "I cannot believe I had a heart attack; at age 47!
Only smokers get that and I absolutely destest smoke.
I got straightened out on many things that week in bed and month vegetating afterward.
1st: Smoking is way overrated, so as to make you think only smokers get attacked; wrong!
So is simple cholestrol (but, LDL/HDL ratio can be very significant for some folks - you gotta get dem checkups).
For me, the number one thing was stress! Which gets little ink because the pill happy medical community has no magic bullet pill for it.
I put my faith in my Cardiologist (getting a good one of those is no mean trick - I met several who insisted on doing the baloon thing - which is risky, and frequently doesn't work but earns them big bucks). They backed off when I learned to ask for a written opinion that the condition was "life threatening", the baloon thing is, although the risk (there's no risk to their fee).
I made sure I had the annual checkups and the "scans and treadmill tests" and knew my "arterial picture". I've held to a health routine for ten years, fighting the bureaucrats to get those tests. Mainly I took the advice to (and this is the toughest part) consider your cardiac health in every aspect of living and don't expect anyone else to watch out for you (I. E. learn to be selfish in protecting yourself).
In a nutshell . . . slow down, slow down, slow down!
When people want you to do something or go somewhere or work overtime ask yourself, "would my cardiologist approve"?
Stay physically fit! My attack was Oct. 10 and I had just finished a summer of baseball (over 40 league) with practices and two games per week so I was in pretty good shape. I quit playing baseball seven years latger (I'm 57 now) and never enjoyed running much, so bike riding is my thing now. Whateever it is, you must have some kind ofo exercise that you enjoy! We had a shortstop who later had the same kind of attack I had, and his doctor told him "no more ball, immediately. I lost track of him, but thought that was bad advice (good for the MD's liability though).
Also, make your own decision, but I firmly believe in the aspirin-a-day thing.
Think of your experience as a good thing. People look at me funny when I say it was the best thing that could have happened. I was taken to the woodshed and "corrected" for not respecting the fact that my body was changing and needed the kind of TLC that only its owner can provide.