I have been dealing with a minor cold for a few days; however, Thursday night I had a fever of 102.2 and had trouble breathing. By mid-day yesterday, the fever was down to 100, but I am coughing up green phlegm and have yellow mucus coming out my nose. Today the temp is normal and I am able to get out of bed, but the phlegm and mucus problem persist. Do I need to see a doctor?