Hello, 3 weeks ago exactly, I felt a scratch throat all day, that night I got chills fever and stuff nose. Next day I stayed home and rested. Next day I started coughing could hardly speak and runny nose, sneezing. At day 5 of not speaking, etc I went to the doctor and he gave me a Z-Pack which I finished. A few days went by and the sore throat subsided, I was left with post nasal drip, itchy throat, cough and a congestion for another week. Then everything subsided except the cough. Here I am at the 3 week mark and though the cough has subsided ( I still cough occasionally, dry non-productive like before) my throat is super dry and the itch in the back of the throat is worse, I check in the mirror and see white patches in the back of my throat! not good.. What is going on?? I have never been sick this long. I do not know if this is relevant but I also have a dry itchy rash on the back of my neck been there a few months and a little on my right arm, wont go away with lotion, oil, balms. I am not sure what is going on here but I need help please. never in my life have I had a cold for 3 weeks straight. I am 29 female had a tonsillectomy about 4 years ago.