You should get a throat swab culture done to see whether the sore throat
is due to some bacterial nfection or not.
Till you get the throat swab done do the following
Hot saline gargles twice a day
Avoid spicy and sour food
Avoid ice and cold drinks
Avoid smoking,if doing
Take some anti allergic like ALLEGRA
180 mg or CETRIZINE
one tablet in night for 5 to 7 days.
Consult a ENT specialist
for the local throat examination.