I see it - I just wanted to know if you were tested for mycobacteria and pseudomonas. The results I see show that Those are two of the most likely culprits for lung infection in people with compromised lungs. They require a an actual culture of the sputum - not just the AFB test. The pseudo takes about 2-4 weeks to grow out, the mycobacteria, 6 weeks or longer. You could request culturing for those.

Since you have been treated with radiation, I would suggest you ask your radiologist or oncologist for referral to an ENT or Pulmonologist experienced in treating post-radiation issues. I am guessing the thick mucus is partly the result of your decision not to take liquids by mouth - my friend who had extensive radiation on her throat sips water all day to keep things moving.

Here are some things you can do to help thin the mucus - clearing it will help keep all kinds of bacteria from growing:
-drink water or an herbal tea from Traditional Medicinals called Breathe Easy - widely available in large groceries, health food stores and on-line
-an OTC med called MucinexLA (long acting guaiafenesin without decongestant added)
-airway clearance (example: https://connect.mayoclinic.org/discussion/lung-mucus-clearance-reducing-the-breeding-ground-for-mycobacterium/ )
-continue to use the nebulizer with saline solution
Let us know how you are doing.
Sue