You need to detox your body Bella and plan a three month program for yourself and include plenty of saunas, if you don't take them already. Your body essentially is just one giant filtration system, filtering out what it can and the rest is left inside, and that's where the sauna comes into play (even clean those lungs out with a peppermint sauna). Improve your lifestyle Bella and you will start to wonder why you didn't do it earlier my dear. They also say that your lungs begin healing themselves after eight hours of stopping, so cut down first, or just smoke weed instead? ;-D Drop the Doctors and see how you feel in a month following a good lifestyle, I'm sure they will still have the same six different answers for you if you went back. ;-)