I have Chest ache on left, heart palpatations, dry cough, upper left back pain, shortness of breath and feeling nausia, any idea on the problem?

Need an exam. With those symptoms and the smoking history, I'd be most suspicious of a pulmonary problem like pneumonia, but there's a long list of possibilities, and you really should have someone examine you and listen to your lungs. Based on that, they might consider further testing. Feel better!