"i have been on for almost six years i&#039;ve had it replaced once. this up coming october i&#039;ll probably have it replaced again.  for me the first one my periods were random.  no period for 3 months then spotting for one month.  after having it replaced the second time it&#039;s been less period all around light spotting.  again considering it again in october just wanted to see the effects others have had.  no weight gain or acne for me. i have a slight temper already so wouldn&#039;t have noticed mood swings"