Have sore throat, swallowing not painful, history of chronic sinusitis (yellow mucous daily rinse), day 1 tickle/horse & more yellow mucous in nose than usual, day 3 photo shows raw red back of throat with yellow hard palate & starting coughing up yellow mucous as well & started course of amoxillin at suggestion of pharmacist to be sure. Day 5 now, pain reduced but appearance the same. Wondering if the yellow roof of mouth means anything..for example in suggesting particular kind of microbe?