"i&#039;ve been using implanon for almost 5 years now, and i didn&#039;t experience any bad side effects. when i had my first one implanted in my left arm i did spot lightly for a little while just a few months, then i didn&#039;t have a period at all, or spotting, i love it. when my 3 years was up i had it removed and replaced in that same arm and still no bad side effects. no weight gain or skin changes or pains and i honesly forget that it&#039;s even there."