"i have had implanon for 3 weeks now. approximately 2 and a half weeks after insertion, i got my period. very light for four days. this would make it a week and a half early- something common for me even on the pill, but never an issue before i started birth control altogether. aside from that, no real side effects. i have put on weight but i haven&#039;t been eating well, so i&#039;m doubting it&#039;s implanon. i love the freedom of being worry free and having no pill to remember. assuming i don&#039;t get crazy periods within the next few months, i doubt i&#039;ll have it removed. no mood swings, no nausea, no anything. my face does look a little bit rounded, though, which is strange."