First off i smoke but not exessivley. Ok so, my syptoms are light headedness, fatique, dizzieness. Constant sharp pains in arms and legs, and i fell heavy, like weighed down especially in my legs. I have an unsteady gait sometimes from it. And shortness of breath for no appearent reason. I dont have the money to go to the doctor. But this has started to affect every aspect of my life. What could it be???