I have been suffering with migraine since I remember myself, I used to take 2-3 exedrin pills but then they stopped helping, lately I started taking sumatriptan as soon as my migraine begins, this month during my period I had headaches the whole week and I took every day one sumatriptan it works great but next day I wake up again with my aching head, I am concerned can it possibly be a sumatriptan side affect or smth like that?