"i have been on lo loestrin fe for about 3 months now, and my periods have been crazy! prior to starting birthcontrol i wasn&#039;t taking anything, but since metformin wasn&#039;t working to regulate my periods, i said i would start birthcontrol. i do have pcos since the age of 15, now i am 26. for the past 3 months on this birth control i have had two periods a month. its not break through bleeding. i didn&#039;t have any other side effects which is a good thing, but i just had to be bleeding for 10 days out of a month."