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.

There isn't sufficient information to reach a specific diagnosis. I would advise you to visit a MD general physician so that you can be examined and undergo the necessary investigations such as CT/MRI(if indicated), CBC, thyroid profile, etc. to find the underlying cause and have it treated accordingly.