A member asked:

Im not sick, but have been hacking up yellow/green balls of mucus for 4 days. been sleep w/ windows open last couple nights, could this be the cause?

A doctor has provided 1 answer

Phlegm: Always good to hear that you don't feel sick. Allergies could do this, too. One big question, though, is "Do you smoke?" That and the environment might also cause a bronchitis. May simply go away within 1-2 weeks but if persistent or worse you will need to be seen by the doctors. Let me how it goes...

Answered 4/12/2016

2.3k views

Thank

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