"i had implanon implanted in dec &#039;08, and have not stopped bleeding since (that&#039;s 4 months). i have also had many other side effects: hot flashes, night sweats, mood swings and irritability, no sex drive, and slight weight gain. i&#039;m sure the hormone delivery in this drug affects everyone differently, but for me, the adverse effects outweighed the benefits of not taking a daily or weekly drug."