"i got this implanted in may 2015, so it has been almost a year. it started off great, light spotting, not pregnant, less cramps. 6 months in i started to get heavier periods (my period was never heavy before i got this) and they would be longer each month. i would get about a week off and it would come back. my cramps have gotten continually worse the past few months, as well as my acne. i have also gained 20 pounds (but that could also be attributed to me going to college) but overall, this birth control does what it&#039;s supposed to, with some uncomfortable side effects."