"i have had the implanon in for almost 3 years now. i have had no problems with it that i can recall! i have actually lost weight being on it, after the first 2-3 months i did not get my period unless i was on antibiotics and the insertion was painless! it did hurt quite a bit for me for about 1.5 weeks after though, but i think that was because at the job i had at the time, i was lifting boxes and things like that on a regular basis (i worked at a liquor store). since then the one thing that i noticed, and so has my twin sister, the more sex you have, your period will return with the cramping and all! i was not thrilled about that! "