"i got the nexplanon in september of 2013. i have had no period til recently (july 2015). it will i for two weeks then stop for about 4 days then start up again.  i have also gained an extreme amount of weight, 65 lbs, and i can&#039;t get it off of me to save my life.  i&#039;m going back to the gyno next week but this is the most dreadful experience ever right now and i&#039;m not scheduled to get it out til next september.  (2016)"