"i have been very happy with my implanon so far. i have had it for about 3 1/2 months. i didn&#039;t feel any pain when it was inserted; only a slight sting when they numbed my arm. i did have a pretty big bruise for about a week, and now i have a very small scar. as far as side effects, i haven&#039;t had any noticeable side effects. my biggest complaint is that i have had longer than normal periods. my first period after implanon was right on schedule and lasted it&#039;s normal duration. my following cycles have lasted about twice as long as they should. however, i don&#039;t have any spotting in between periods; my period is just extra long. i feel like that is a fair trade off though for not having to worry about birth control at all for 3 years."