"i have been using implanon since march of 2008 after the birth of my son. i had the first one the full 3 years and had it removed and replaced with a new one. the first one i had no issues. i still had regular cycles and minimal weight gain. the second one i have had close to a year now and having completely random cycles lasting up to 17 days! i have no libido, have been placed on antidepressant from my primary physician and gained over 35 pounds! i have been referred back to my obgyn to have it removed. everyone is different, but its wierd the first one was fine and now this one is horrible. "