How painful is a heart attack? and what are the symptoms?

Classically: Angina pectoris =substernal pressure, pain with radiation to the neck or left or right arm and shoulder. Some will have abdominal pain-and be confused with gallbladder or stomach symptoms. Ladies seem to have less classic// or tolerate pain better than men. Relief with Nitroglycerin is very suggestive. A feeling of impending doom, pallor, sweating suggest a bad day!

Heart attack: Heart attack range from silent to severe pain. The latter is classically dull, mid chest pressure radiating to the jaw or left arm associated with sweating and sense of impending doom. Symptoms can be very variable.