Hi, I ve felt like I ve been fighting off a cold for the past 5-7 days. I ve had a lot of phlegm, and for the past 2-3 days, when I cough up the mucus or when I blow my nose, it s yellow. (This has almost gone away now, though; today it was clear 99% of the time.) All day today, I ve been very thirsty, but I m not sure if it s because my throat is dry from constantly trying to cough up the phlegm. Also, I m not sure, but I think I can feel the cold in the top of my chest a little bit periodically. Is this something I need to go to the doctor for, or should I just continue to drink lots of fluids and take it easy? Thanks, Julie