"i had implanon inserted in august of 2010. other than a really nasty (but painless) bruise on my arm for about a week i haven&#039;t really had any problems. the only time it hurts is when my daughter pinches my arm right where the device is, but obviously that isn&#039;t because of the birth control. almost every time after intercourse i would have a period, which for me isn&#039;t all that big of a deal, i had irregular periods before i was pregnant. but, they don&#039;t last but a couple of days and they are very light and cramp-free. please don&#039;t let the negative reviews scare you out of this birth control. after being on the depo shot for almost 5 years, i wouldn&#039;t give up my implanon for anything."