"i used implanon for 6 years and won the lottery in side effects- no periods and the first 6 weeks i actually felt euphoric! has anyone else had that?  my mood went down after that but i felt like it stayed slightly above average for me the whole time on it. so for me it wasn&#039;t just birth control but an anti depressant. i went off it 2 years ago as we would be ok falling pregnant now and have been really struggling with mood swings during my periods. i hate it. my friend who had major depression in her trends found the same side effects as i did- more even moods and more productive."