Welcome in H.C.M.
I have gone through your query regarding right sided ear ache
, pain behind right eye , and right sided headache.
Considering your symptoms it appears as you may be having-
1- Chronic migraine
2- Right sided sinusitis
You are advice for these basic investigations for differential diagnosis.-
1- C.T. Scan of para nasal sinuses
2- Culture and sensitivity of nasal smear.
3- Complete ophthalmic examination.
4- Audiological testings.
Beside above thorough examination by an ENT doctor and co-relation of inferences of investigations will guide us about diagnosis that may be accordingly manage.