"i had the implanon in for the whole 3 years i gained around 50 lbs i had no energy to do anything. i had terrible mood swings i would cry and feel down so much of the time. i didn&#039;t get a period the whole time i was on it i had light spotting maybe twice a year for a few days randomly. i got really bad headaches as well. and i ended up with ovarian cysts as well. i did not have a good experience at all."