Right I have had the nexplanon for 9 years obviously I have had it changed.. With no problems that I can remember in the past.. It's due to be changed on July 14.. But since December I have had a period that is constantly heavy now way in to January and no sign of stopping if it does stop then as soon as I have sex it starts again.. It's not heavy where I am constantly changing tampons but it's still heavy!! My smears are all upto date!! But it's getting annoying now