I got the Nexplanon inserted of July 13th, 2013 and about 3.5 weeks later I started my period, which was when it was supposed to on a normal cycle. But my period had now lasted six weeks and I'm wondering if its worth the wait to see if it'll stop, or if I should try a different birth control. This period is extremely light, it's like it's not even there, but it gets old after a while.