I read your medical history and understand your worries. The most important thing is to keep in touch with your pneumologist for further evaluation.
Antibiotics will help you ease your symptoms. If I was your caring doctor would ask to do culture (for bacteria and fungus) of the sinus
discharge and sensitivity to find out the most appropriate drug for you (whether antibiotic or antimycotic).
I also suggest:
- keep room well humidified, not too cold
nor too hot
- keep good hygiene of nose and throat (as you are doing with washing)
- can do inhalation therapy
- get 2 pillows when you sleep.
All the best!