I've been on either implanon or nexplanon for nearly 6 years now. Everything has been fine, I never had the nasty side effects that a lot of people complain about, until the last four months or so. My current implant isn't due out until Feb 2016... why would there be a sudden change in how it's affecting me? I mean, nearly 6 years with zero side effects and now every side effect associated with this form of birth control hits me all at once... it's progressively getting worse, I'm actually starting to dislike my implant at this point.