"ok so i&#039;ve had nexplanon for 17 months, almost a year and a half. since getting it put in i have gained roughly 25 pounds. i gained up to 30 pounds 4 months after getting it in. my weight will fluctuate about 5 pounds. i have dieted and exercised and will lose a few pounds but then it goes right back up. also, my acne has gotten worst! it used to be just on my chin now it radiates up my cheeks too. i have gotten acne scars and stretch marks, bad stretch marks from gaining the weight and the acne. i also bleed everytime after having sex. my periods were nonexistent at first then spotting a lot, now i spot about everyday but not enough for a pad or tampon. i gave this bc a 5 is because i have not gotten pregnant."