Starting six months ago I began having severe pressure in my torso, arms, back, neck and lower jaw (feels like someone sitting on my chest). I get cold sweats, light headed and severely nauseous. Pain does not subside laying down nor sitting up, and occurs during waking hours and has been know to start while sleeping. I have had a lot of stress factors most of my life, diabetic (uncontrolled), high cholesterol, 47, smoker (working on it), I am 5' 2" 180 pounds.