age 35,5 5,115lbs. peptic ulcer,lower esophageal sphincter sticks when eating solids, sore throat over a year, coughing clear mucus with brown in it, neuropathy endoscope done in june revealed a fungus in throat when I went to ent he scoped my nose into my throat and now fungus is gone but my throat is stained yellow..what could it mean when your throat is stained yellow?