Yes, I do get white bubbly when I wake up and when I exercise. Then I really get to my lying yoga postures, the heavy mucus/phglem comes up. Until I get the thick stuff out and it begins to be more light- toward white bubbly. Then I know that my yoga/and exercise has released the heavier stuff. Then I'll nebulize with7% saline to clean up what's left until white bubbly shows up. I am sort of clear until late afternoon and then the white bubbly occurs and I'll swallow or spit it out until early dinner. I'll do another nebulizing with 7% saline with the hope of sleeping without coughing. Most of the time it works. If I do cough in bed, I'll get up and do the aerobika to get as much mucus out so I can sleep.