"my nexplanon was implanted january 2015 and was immediately amazing. no periods, no pain, no mood swings, no weight gain, and no babies. now its been about a year and a half and i was prompted to leave this review after seeing some horror stories posted around the web involving this medication. the only change i&#039;ve noticed since the first week i had it include light spotting (happened 4 days ever out of 18 months). my insurance covered nearly all of the expense, and the spotting is quite a fair trade for no more painful pms or ultra heavy periods, and no unwanted pregnancies."