Lisa, if I remember correctly, you and I both handled our heart attacks in the same way: we went to dinner and then shopping at Walmart!
The bulk of my discomfort - which is how it started out - was in the hollow of my throat. So you automatically think heartburn. And my left arm didn't go numb or even really hurt too badly. It was this thin line that ran down the back of my arm, so I also thought nerve pain - thought I must have pinched a nerve. And it doesn't all happen together, necessarily, either. I started with the discomfort - later, pain - in the hollow of my throat, and it progressed over a period of days to shoulders, neck, jaw, upper back, then arm. Oh, and the belching. And the bloating.