Judy -
My symptoms (arm pain) were the same in 1991 … My very able internist insisted on a stress test. It was positive for a blockage but the attending cardiologist said it was a “false” positive as I was too young (49) and the wrong sex! Able internist demanded a nuclear stress test, resulting in locating a 95% blockage in the left anterior – same as you.
You say you did have a heart attack (myocardial infarction), and if so, how was that determined? Although I had significant angina attacks, I never had a heart attack with subsequent damage to heart tissue.
Keep on being your own best advocate … it’s the only way!
Meg