Question: Over a week ago I was diagnosed with an upper respiratory infection, I was given antibiotics due to the doctor saying my throat was very red and thought something to be gong on. I completed taking the antibiotics and the cough pearls the doctor gave me due to my congestion and coughing. While on the antibiotics and cough pearls the sore throat I had became better and the urge to cough lessened. However, I have had contest for over a week, and the sore throat came back, I am a minister and so for the past few Sunday's as I preach I have lost my voice every time, so my voice seems to be fragile right now. My question is can the mucus still in my system (I also feel a nasal drainage in the back of my throat) cause this sore throat that I am experiencing. It seems that when I get up my throat is very sore, I cough and hack up as much mucus as I can it the soreness subsides a little, however, by night time my throat is very sore again. And suggestion for what's happening?