have occasional hard, heavy heart beat. No pain just as if the heart is missing a beat with a heavy feeling in the chest. No arm pain. Usually last only a few seconds. Can happen at rest (laying down) but usually after getting up from a sitting or laying position. Had a thorough heart exam process a bit over a year ago. I take a cocktail of pills for hypertension as well as Lipitor and Theopolinne (for breathing) and Klonopin .