migraine is diagnosed when there is one sided headache (most commonly). which is preceded by a aura like nausea, vomiting etc. sounds, and light aggravate the headache and person usually finds himself at ease when he buried his head under the pillow.
other causes for headache could be eyes. if you have spectacles suggest you to wear it cause that induces headache everyday. if you don't have a spectacles, it would be wise to get them tested so that this cause is ruled out.
stress, hunger, etc can also cause headache.
suggest you to visit a physician who would diagnose what headache it is, then treat accordingly.