"i have had implanon for just over a year. although its a great bc, i have had no weight gain or mood swings which i like but i do not stop bleeding it&#039;s so irregular i still have no pattern i am currently stuck in a 2 week period and starting to get bad cramping. when i first got it i had a 3 week period it seemed to be fine and then it&#039;s just changed again also my skin has turned into a teen in puberty :("