"i love the implanon. i have tried all other birth controls except the ones you insert in the uterus or mirena. anyway, my period has been nonexistent since 2010 and my partner couldn&#039;t be happier. i do have sharp back pain and cramps including mood swings basically everything that my body would do if it was &quot;pregnant&quot; like the obgyn explained. i have gained 20 plus pounds but i know a majority of it is my diet and exercise so i highly recommend this to women who want something long term."