I do airway clearance every day using 3% (just started using 7%) hypertonic saline….once in the morning and once late afternoon. I also use the Aerobika after I nebulize the saline. I also take the Big 3 antibiotics 3 days a week even though my last sputum culture was negative for MAC. I also use Albuterol when needed. Within the past week I have not been expelling a significant amount of sputum. Some days there is hardly any mucus. Should I be concerned or is the daily use of airway clearance having an impact?