Thanks for writing to us about your query.
I have gone through your query regarding your headache, sore throat
and ear pain.
Considering all aspects of your symptoms it appears that you are having acute upper respiratory tract
infection with acute otitis media
Initially you were having nasal infection
which had given rise to sinusitis and headache, infection from sinus came to throat as a post nasal drip
and thus soreness in throat developed. From throat one tubular connection joins the middle ear called as Eustachian tube , which is responsible for giving way for infection to reach the ear and thus acute otitis
media developed which is a painful disease of ear.
You are now advice for these investigations-
(1) C.T.scan of paranasal sinuses
(2) Culture and sensitivity of throat swab.
(3) Blood - CBC, ESR, blood sugar- Fasting & P.P.
(5) Urine- Routine & Microscopic.
After this much work thorough examination is must to get clinical finding and their co-relation with investigation result will give us final diagnosis which is than be planed for treatment.
In the meanwhile you may take antibiotic tab, anti histaminics, decongestant and steam inhalations.