Thank you for posting your query at DoctorSpring.com
I have noted your symptoms. Though migraines can change in nature and character, we need to investigate and exclude other causes. The most important test would be do a brain scan, preferably an MRI with MR venogram of brain. In addition, vitamin B12 and D deficiency should also be excluded.
Dr. Sudhir Kumar MD (Medicine), DM (Neurology)
Senior Consultant Neurologist