How has nexplanon affected your period? I got my period twice last month (October). The second time was a week ago and now I started again! Is that normal? I was on Nexplanon 3 years ago before I got pregnant and never had this problem I was on it for 4 years and had a regular period. I’m pretty much getting a period every two weeks. It only last 3-4 days but it’s still annoying.