Hello there... I understand your concern about your health condition and I appreciate that...there are many reasons for headache it may be due to increased blood pressures, migraine, cluster headache, refractive errors, meningitis,sinusitis,increased intracranial pressure, reffered pain from somewhere else... So detailed history and examination with relevant investigations is necessary... Kindly consult nearest neuro physician they will do the needful.

One-sided headache and eye pain lasting several hours associated with nausea or vomiting is suggestive of migraine. If associated with cold or fever it is suggestive of sinusitis.