Hi, I was wondering why it's so hard for me to breathe, like breathing out doesnt bother me it's getting a good breathe in that I have a problem with? I also hack and and bring up black spots in my mucus about 50 to 80 times a day and that's low balling the number cuz I've never actually counted, I do smoke cigarettes but Im 19 and have only smoked for 7 years, (about 15 cigarettes a day) but I know 60 year olds who have smoked for 35, 40 years and don't have this problem, I need advice please.