"i have had the implanon since may of 2009, and my experiences are similar to the bad ones. from the time i got it, i had light periods for almost 6 weeks. then the bleeding stopped for about 2 months. now it is september and i started again and it will leave and come back. i have also noticed that when lifting heavy objects i will have unexpected bleeding. i haven&#039;t taken it out because i am in school and this problem is a lot better than having an unexpected pregnancy. however, those who don&#039;t have the patience for this type of thing beware. i do have mood swings, my skin was beautiful before, now i break out.  no headaches and weight gain yet. however, this process is scary because your periods are unpredictable."