"i&#039;ve been on this bc  pills since aug. 2015 and since november 2015 i&#039;ve had a period every month (twice in nov.) i&#039;m only supposed to have a period once every three months. for the last 20yrs. my periods have always lasted 5 maybe 6 days but since switching to sprintec  they are now more like 8 to 10 days long. but i&#039;m not supposed to be having a period at all. i&#039;ve seen three doctors who basically tell me it&#039;s normal, how? this is the only pill that has done this to me! it&#039;s put a strain on my relationship  and i have officially  stopped taking it as of yesterday. i&#039;m going back to my doctors to get put on a different one."