I have bronchiectasis with asthma. There are times when I can't seem to get the mucus up, even after coughing a lot. It's like it's stuck at the top of my lungs.
I read that having a cup of coffee (or anything with caffeine) will help open the airways. I have tried it and most of the time, it works. If you aren't use to having caffeine, it may make you shaky for an hour or two, but it does help bring up the mucus.
Try it and see what you think, Beth