For the past five days I’ve been having an itchy throat, and I thought I was just getting sick. On the third day I coughed up yellow phlegm and felt mostly better. On the fourth day, my phlegm was brown and yellow, and it was still a little itchy after but I wasn’t bothered the rest of the day. On the fifth day, my phlegm was completely brown, and an hour later my throat still itches.