thanks for your query at HCM
there are some set criteria for diagnosing case of migrane
Headache lasting 4 hours to 3 days (untreated)
At least two of:
1 Unilateral pain
2 Throbbing type pain
3 Moderate to severe in intensity
4 Motion sensitivity (headache made worse with head
movement or physical activity)
At least one of:
3 Normal examination and no other cause of headache
this is simplified ciriteria.
check yourself weather your symptoms belong in here .
if not fitting in to any of these criteria other possible causes for headache have to be ruled out and further investigation might be needed.
also get visual examination done most of the times visual abnormalities causes headaches