Feel short of breath, O2 levels around 96 and pulse 67, Dry Cough feels like something is stuck in my lung or there is s mucus plug in the lungs RT side ... After I cough for an hour I will cough up a pea sized thick white glob of mucus, Then I feel ok for about 3 to 4 hour then the sypmtoms repeat, This has been ongoing for 5 months,, Been prescribed steroids, albeuterol, and Breo, Nothing helps ..