"tarina protected me from pregnancy, but not without a cost. i was on this for a total of two months, two pill packs. the first pill pack had less side effects, but the second was awful. i didn&#039;t notice any mood changes or anything, but several things happened with my body: every day on this pill (1st &amp; 2nd pack) i woke up with a hangover type headache. excedrin helped, but at this point i was taking it every day. after my first pack, my period lasted 1 maybe 2 days (i am usually a light bleeder 3-4 days.) once i started my second pack, i got a full on period in the middle of my pack. not to mention, i had awful stomach pains all the time. i had never had these issues with birth control prior. as soon as i got off it, i felt relief in days."