Nexplanon
"I had my implant inverted Sept 2013 so I've had it just a couple days over two years. I've experienced very infrequent periods (I never had one until about 11 months after the insertion) but when I have them they're like normal flow, but oh the pain! Doubled over with cramps I can't even get out of bed. Thankfully this only happens every few months and it only lasts about an hour or so. 

I've gained a lot of weight after having the implant (maybe I'm just looking for something to blame lol) but I've managed to loose some by exercising but I am no where near the weight I once was. 

I definitely recommend the implant insertion is so easy and quick! And you don't even notice it in your arm until you feel for it."