"i had nexplanon inserted 6 weeks postpartum. the insertion was easy pretty painless and it only bruised for a couple of days. i&#039;ve only had it for 4 months the first month i had a pretty heavy period it lasted for 6 days but it was bearable. i haven&#039;t had a cycle since that first month though. i have noticed a little weight gain but not a lot. what i would say is the most annoying is that around the time i should get my period i&#039;m very annoyed and have pretty bad headaches and my arm itches like crazy where the rod is inserted other than that i&#039;ve had no complaints."