Hello i appreciate your concern Looking at your history this could be due to URTI like tonsillitis or pharyngitis, peritonsillar abscess in my opinion you should consult your GP for examination and a battery of tests like blood for hemoglobin CBC ESR CRP X ray paranasal sinuses you may require a course of antibiotics preferably penicillin group of drugs and symptomatic treatment as follows take ibuprofen for pain antihistaminic drugs like levocetirizine or azelastine nasal spray for stuffy nose warm saline gargling steam inhalation multivitamin supplements with vitamin C hope this helps you Regards