"was on depo for a year prior to switching to nexplanon in 2012. for the first 2 and half years there were no periods. the the last couple months of the 3 years however unpredictable periods started of varying durations of up to almost 3 weeks. next insertion will probably be a few months before the 3 years to prevent the bleeding. new implant stopped the bleeding. no problems with weight gain or loosing weight on nexplanon."