"it&#039;s birth control and i feel with every birth control i have had, i have similar side effects - low sex drive, about 10 pounds weight gain that will not go away (workout 6 days a week &amp; eat paleo).  but, it works in controlling my endometriosis pain and my periods only last about 4-5 days.  if you start spotting, stop taking the pill and have a period! that&#039;s how you get it to stop.  i have been taking this for 10 years and i take it at the same time and still have spotting, but that&#039;s just when happens when you try to tell your body to stop a natural process. if you have endometriosis, i recommend this pill otherwise get a regular, 1 month pill which will give you less side effects while still working at a method of contraceptive."