Thanks for all these additional information.
I understand your concern.
Well as you describe, in most of the upper respiratory tract infection are caused by viruses.
And antibiotics don't help.
He should take some self-care measures until you see your doctor.
Do steam inhalation and saline gargles.
He should take the nasal saline spray and OTC Nasonex spray.
He should take Ibuprofen alternately with Tylenol every 4-6 hourly and Nyquil/Claritin.
He should hydrate yourself with warm liquids.
He should start a multivitamin supplement and vitamin C lozenges.
Take OTC Robitussin DM for a cough.
Elevate his head while lying down.
If his symptoms will persist then see your doctor for further evaluation and management.
In case of persistent high fever, sore throat then strep throat should be ruled out and then antibiotics can be prescribed.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
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