i was just reading about what people have wrote about Coughing up flem with black strands of flem in it , since i stop smoking 14-months ago , i'm still coughing up this chit! , i know smoking for more than half my life 39yo now hasnt helped at all, but i do cycle 300+ miles every week , i try and do insanaty work out dvd also, but for real how long can this gone on for or is it to late and i have lung cancer? IE as im coughing every day near enough now , lol, thanks for taking time to read what i have wrote.