HI samuel. I have had the implanon for two years and it's getting taken out next year, during the period of two years I haven't had a period. I am twenty-two in two weeks, and I now have experienced today a light bleed, brown blood not enough for a tampon, no heavy period and no cramps, no tiredness, didn't even realized until I went to the bathroom had it 4pm and stopped tonight at 9pm. I had like pms today and last few days, like it felt before a period, it iterally felt like my first ever period, and I am healthy, I recently turned vegetarian 6 months ago and living a healthy lifestyle I am a personal trainer, also student and I am 46kilos and short 5'2, yes underweight but I am fit and no health problems. I feel as healthy as I was when I was seventeen, and always been the same. Physical parents and healthy lifestyle. What's going on! :)