"the only good thing about nexplanon is the convenience. this birth control gave me horrible acne on my jaw, my back, and my chest. i have never struggled with back acne, but after being on this birth control i now have scars on my back from the acne being so bad. my jaw acne is horrible. the only relief i will find is taking the implant out, which is happening very soon. i have struggled with cramps constantly, and finally got a horrible period that lasted for two weeks after the first year. i have horrible mood swings and anxiety on this. i have gained 18 pounds and i&#039;ve never had a problem with weight. i don&#039;t recommend this at all. i am so happy to be going back to pills."