Doesn't matter: While it would be nice if a particular color of phlegm suggested bacterial infection (and classically you think green phlegm was bad), in actuality it's not so helpful. What is more important are what symptoms you have now; do you have fever, chills? Shortness of breath? If not, then it's probably just residual airway irritation after the cold. Good luck!
Answered 4/3/2013
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