I had a lot of sores in my mouth last week. then a sore throat. On Saturday/Sunday started to have yellow phelm cough up. Then on monday I felt pressure in my chest. Went to Urgent care and told had upper respiratory infection. Gave me a breathing treatment and a steroid shot. Next day, my voice was almost gone and throat hurts worse. Sharp pain when swallowing. Is there anything I can do to help pain? and to get this to go away?!