Mostly you are having viral infection causing you nose block sore throat
So it is definitely not advisable to go for a surf. Because viral infection is suspected, antibiotic is not going to help. Rest is the main thing required.
Avoid mental and physical stress
as much as possible.
Take plenty of warm liquids
Do steam inhalation
You can use some antiseptic lozenges to sooth the throat.
If the symptoms do not progress then nothing more need be done.
But if the symptoms progress or you develop high fever
you may need a course of antibiotic (to tackle the secondary bacterial infection) antihistamine and antipyretic
as the case may be.