Dr. Says I am not getting enough oxygen to my lungs & there is nothing I can do about that. So what now?

Ask why. You should ask your doctor why are you not getting enough oxygen to your lungs, is it because of an obstruction preventing air getting in, is it because of a restriction that prevent you from expending your lung during inspiration, or it is because of destruction of some of the air sacs within your lungs(alveoli).