Hello, I have been waking up every day and coughing and having an excessive amount of mucus come out of my lungs. This just happens when I wake up. I used to be a smoker for about 5 years and now I quit. Could that still be an effect of my previous smoking? Or is it something that I need to have checked out? (Plus, I checked my blood pressure several times and the systolic seems to be a little high). Thank you.