Norethindrone
"Began taking this a month ago for heavy periods and cysts. Not sure if I want to start the second pack after having an ocular migraine for 4 days. I take this like clockwork every night. Haven't had a period yet, no other side effects. Not sure if it's worth it, migraine or massive heavy periods? I'd almost rather have to wear 2 pads than be out for 4 plus days and counting with this migraine."