The 3 to 6 month period, after one quits smoking is often characterized by increased cough and sometimes discolored sputum. The shortness of breath and chest tightness is unusual after quitting as long as one is able to cough-up the increased phlegm. The clear chest x-ray and negative cytology are encouraging but do not rule out some types of chronic lung disease. This, plus the x-ray findings of hyperinflated lungs are good reasons to have a spirometry done. It’s also good to have pulmonary function tests (PFTs) done as a baseline.
I hope you never do have another puff in your life, regardless of the outcome of the spirometry. You may want to look at our giving up smoking information at http://www.nationaljewish.org/disease-info/wellness/smoking/index.aspx for ways to stay smoke free. Check with your doctor for other quit smoking resources in your area. Also hope that you keep running.
One final thought. Rarely, with smoking cessation and increased sputum, one may have bronchospasm, such as occurs with asthma. This is another reason why you should have spirometry and a thorough physical exam of your lungs.
Giving up smoking is a good idea, it appears you are not one of the very , very few people who can smoke all their life and get away with it.
Keep up the running, it is doing you alot of good and is increasing the flow of oxygen to your lungs. Try some albuterol before excersize and you may feel better, you might also benefit from a course of advair if indeed your pfts point to this.
Be well,
Eros.
Thanks!
Gina