"i had my implanon inserted in november 2 years ago. i have been waiting and waiting, thinking my body would get used to this. it hasn&#039;t at all. before the implanon, i was on yaz. i had no acne, very light periods lasting 3-4 days, no weight gain, no mood swings, nothing. i just had a big problem with remembering to take the pill. so i decided to switch to implanon since i wouldn&#039;t have to remember anything. i now have horrible acne, i have gained about 15 pounds, i have bad mood swings and my periods are absolutely terrible. i will have heavy bleeding for about a week, then light bleeding for another week, and then spotting for another week. i&#039;ll be off for about 2 weeks, then start the whole cycle over again."