I just got my af this week. Took 7 weeks. I was pretty happy because a lot of ladies wait months or years. I'm overweight, so my nurse practitioner told me that burning fat can help cause some hormone to increase which causes implanon to leave faster. I did cardio 8 days straight before, and then got my af. Related? I'll never know.
Just an FYI, I had symptoms like I was pregnant for the past 3 weeks; morning sickness, boobs hurt, Ect.