"i started taking these pills in hopes of having my period every 3 months. the first month of the pack, i don&#039;t bleed at all until about the last week i have some very light spotting that lasts up through the middle of the 2nd month/pack of pills....then it remains heavy from the middle of the 2nd month all the way through the end of the third month. so total i ended up bleeding for about 6 weeks straight through each pack of pills.  i&#039;ve been on it for about 9 months now and this has happened every time. i will definitely be changing to another kind. i&#039;d rather bleed once a month heavily than 6 weeks straight. i also was extremely tired all the time. the only positive is that it did prevent pregnancy and my skin cleared up tremendously."