"hi, i got the implanon in, in december  2014 i&#039;m now 16 years old. i gained 25 to 30kgs in that period. i never changed my eating habbits, i went from a size 6 to a size 16. it really makes me depressed. i&#039;ve tried to change the way i eat and i now have joined the gym! but i can&#039;t seem to see any changes? i have really bad stretch marks and a new one appears every day ! it is honsetly the best with the prevention of pregnancy but beside the fact of weight gain i would recommended it"