hello, in the mornings , I am now having to blow my nose cause I have excessive mucus. its clear. but I have never had to before. there are times I keep coughing and small hard yellow piece of mucus comes up. when I lay down for the night, I hear noise in my chest. I have to cough to make it go away, I do this several times through out the night. when I take a brisk walk my breathing is heavy and seems like I have to work /focus on my breathing. I do smoke , I have been smoking for 8 years or more