A freind of mine told me that one night he woke up at 11.00pm with a really sharp pain on the left side of his chest (at his heart) and the pain slowly travelled to his neck, and down to under his left arm, the pain lasted about 2 hours, and slowly disappeared, and the next morning he was fine, with no pain at all. Is it possible to have a heart attack , and not collapse or die, without any medical help at all.