Most commonly sore throat is a viral infection. A severe infection can cause pain in tongue and cause difficulty in chewing and swallowing. Following measures may be helpful for the immediate relief of pain;
1) Warm saline / salt water gargles
3) Rest to throat; less talking!
4) Warm fluids; increase the fluid otherwise also.
5) Tylenol or Motrin / Advil (Ibuprofen) it will take care of your pain and discomfort.
If these measures are not helpful; following should be considered for your symptoms;
1) Epstein Barr virus (EBV)-associated mononucleosis
2) Parapharyngeal space infections,
3) Peritonsillar abscess ("quinsy"), and
4) Submandibular space infection
Quick swab for streptococcus may sometimes not able to identify the bacterial organisms so a visit to an ENT specialist and following investigations, should be done;
1) Throat cultures have been the "gold standard" for diagnosing GAS (group A streptococcus) pharyngitis and another pathogen, such as N. gonorrhoeae.
2) Blood counts
3) EBV virus antibodies
4) Indirect laryngoscopy (ENT specialist see the inside of the throat by a mirror).
5) Lateral (side neck)) cervical view of the plain radiograph, exposed for soft tissue detail.
If the throat culture is positive and counts show the infection, injectable or oral antibiotics would be needed. Antibiotics of choice are;
1) Penicillin G plus metronidazole
Please feel free for your follow up questions.