I can't imagine having it after only smoking 6 years. That just doesn't sound right J. I know if I don't drink enough water and my allergies act up I cough up alot of stuff and sometimes it gets stuck and I start wheezing. But once I cough it up I'm ok. I seem to be allergic to alot of things. Maybe you don't have COPD. I was told I have it and emphysema. But I tend not to believe alot of what doctors say. I have been misdiagnosed before in the past and know other people who have been too.