"i got nexplanon 8 weeks postpartum. since i&#039;m breastfeeding, i had no period before getting it. i got it inserted on a friday and started bleeding the following week on thursday. the bleeding lasted for a week straight. i&#039;m going to assume it&#039;s my period. the only side effects i had was the bleeding and slight increase in appetite (no weight gain though) oh and the nasty bruise by the insertion site. i was nervous about getting a hormonal birth control birth control. i was on the pill a couple years ago and was not myself on it. i&#039;m really happy with nexplanon so far."