Coughing up Yellow Mucus?
Coughing up yellow mucus is related to a sinus infection. It could also mean that you have a virus. Medical attention from your family doctor is needed in order to clear this up. When mucus is present, it means that your body is fighting something off, whether it is an infection or another illness. Increased fluid intake is important to helping to remedy this problem. It should not last longer than one week, so after one week, antibiotics are needed.
Coughing Up Mucus Green, Yellow, Brown, White, with Blood – Act for Libraries