Hi I had gone through your query. Certain investigation is necessary to reach proper cause. 1st is blood pressure and other routine test. Hypertension is the commonest cause of headache. 2nd require is fundas examination. It will shows any papillodeama that suggest raise in interracial tension. MRI brain will helpful to rule out any pressure producing lesion or space occupying lesions. If all come normal then no need to worry. It may be due to stress or tension type headache. simple analgesic or amitryptiline can be useful in tension headache. Migraine headache is also need to be ruled out. Consult psychiatrist or neurologist for better evaluation. Wish you a very good health. Still if you have a query then feel free to ask. Thank you.