for the past week and a couple of days i have been coughing very very badly, and also wheezing, most of the time when i cough i cough up mucus that looks like a dark yellow and my chest hurts bad when i cough. 2 days ago i began to throw up, i have not been able to hold down any solid foods i can only drink liquids. i know if this persists i will have to go to the doctors office, however if i can avoid that will be a plus. please help me.