Lucy,What Spaw said. I went through all this mess about 13 years ago. I had an undiagnosed heart attack in 1982 that was treated as angina. The doc I had at the time said he couldn't justify ANY invasive procedures, so I was just on medications. It took me two years to recover. Then in 1988 I had another and they got aggressive. Sent me for an angiogram, found the blockage (stress-related constriction, not plaque buildup or anything like that) and did an angioplasty on me the same day. After a night's rest I was discharged and felt better than I had in many years.
Since then, I've gone back to exercising and pretty well living as I please, albeit with with meds for high blood pressure and cholesterol — which is no big deal.....
Best of luck. And, as Spaw said, DON'T WORRY. It'll do absolutely nothing except make things worse.
cheers,
david