welcome to healthcaremagic
At what times do you feel it more-morn.Does it have some relation with food intake? or reading?Stress?
Headrushes due to sinusitis
,neck problems,eye strain- vision power,high BP
,ear problems,Bld sugar levels etc
What was your blood sugar level?
Take Glucometer at home to check your blood sugar .
To rule out the cause you must visit preferably diabetologist
Keep your diet under control.
Exercise regularly.Avoid long hours of fasting-not taking food.
Wish you good health.