Joann your experience is similar to what many of us have been through. I can relate to you saying that two years ago you were functioning so much better.
I dealt with chronic coughing and excessive mucous for 4 years before I finally got some relief. I also have been told that I have mild bronchiectasis. I believe my bigger issue was chronic pseudomonas aeruginosa infections. I used multiple courses of oral antibiotics which would make me feel better for short periods of time. During my worst time I had pain in my chest and sometimes my back directly behind my lung.
It wasn’t until I did my own research and asked for inhaled Tobramycin that I finally got better. My cough and mucous have declined significantly. My most recent sputum sample was free of pseudomonas. I’m not sure it has been eradicated for good but I am so much better.
Have you submitted sputum samples? How many times?
I just want to repeat what you have heard from others. Educate yourself and be your own advocate. If you have the opportunity for a second opinion take advantage. Good luck and don’t lose hope.