I had implanon inserted on 1/08 and it is the greatest BC ever. I have not had a period since then, very little in the way of mood swings, and no pregnancy. I was very bad at taking the pills regularly, and the shot gave me mirgaines like no other I've ever experienced. Worst thing in the world. I do have acne now, and weight gain (but I would bet that's from other lifestyle changes also). The implant itself didn't hurt at all and you can't see anything at all. I do every once in awhile have to check to make sure it's still there but that is just my own craziness.