"i got the implanon when i was 18. at first i had no bleeding. few months later i had regular periods and terrible mood swings. i have no idea how my boyfriend at the time put up with it. i then started to have long and heavier periods lasting about two weeks. my normal period is 4 days. but after that i wouldn&#039;t have a period for months. then the heavy bleeding. now i&#039;m just spotting. had a nasty discharge with this. freaked me all the way out. still have this problem and it&#039;s due to come out in the fall. over all. very effective."