Bandit; Is the mucus from your nose yellow is a sign of an upper respiratory infection. You'll need antibiotics to help clear this up. If this is a sinus infection you'll have pain in your teeth as well. A simple course of Antibiotics will help. But always remember to finish the FULL COARSE of the antibiotics. Don't stop them when you feel better.

should i go see a doctor
i feel perfectly well
its just the drip thats abnormal