"i have been on implanon since may 2013 and altogether i have been on my period for a total of 6 months. my periods used to be super light and 3-4 days long. i have not gained any weight however i have lost all interest in having sex.  my boyfriend of a little over a year and a half is going crazy and i am also. i have read some other reviews on it and am glad i am not the only one. i will wait a full year before deciding weather or not i am going to take it out."