I can see that. I would probably have to make a deal with you too, because when I see dark yellow or green in my mucus I would probably be persistent in my request for an antibiotic. I have seen too many times, dark yellow, fluid, and I get nasty infections. So next question, if it is just a cough, and I am misinterpreting, (I probably am) don't want to argue with a doctor. (unless your a doctor like Ross on friends.)