Thanks for the query.
Sore throats are generally caused by viruses but a bacterial infection may also cause this.
Since you are not complaining of any cold
or stuffy nose,it could be a bacterial infection.
You must visit your doctor for the physical examination,a throat swab and a prescription of antibiotic.
Till you visit your doctor do regular gargles with warm saline water three times a day.
Take some Tylenol
,if you are having bodyache or headache.
I hope it helps however you may revert to me for any further query.
Best of luck