Thanks for posting your query.
You are suffering from Acute pharyngitis
with involvement of sinus and middle ear cavity.
Involvement of nasopharynx
may be due to decreased immunity and frequent viral & bacterial infection.
Nasopharynx and middle ear are connected by eustachian tube and any infection, if untreated, may spread very easily to middle ear.
Nasopharynx and nasal cavity
has sideways sinuses
which are connected by their ostia.
Any block in drainage
of sinuses or frequent infection may also involve sinuses and may cause pain, swelling and fever.
You should consult with ENT surgeon and should go for PNS x ray and ear check up.
In the initial stages, these conditions may be treated by medicines only. But if chronic then you may need surgical method for treatment.
Dr. Mayank Bhargava