Don't take it lightly; you should get it checked out. Frequent migraines could be a precursor to blockages in the blood vessels of the heart and brain, or even a more serious condition like a stroke.
Discussion
Thankfully mine are rare and can be handled when I catch them early. Mine are almost entirely due to me needing to wear glasses I refuse to wear. And not really refuse, but more too lazy to go get a new prescription. Lol.