"i&#039;m a 16 year old girl, and i&#039;ve had my implanon since january 2010.  at first, i really liked it because i didn&#039;t get my period again until march. the period that started mid march didn&#039;t end until mid april.  i noticed no severe cramps, or mood swings at first.  i then went 3 months without a period, with a high sex drive, and feeling really happy.  however, i think i was having mood swings without realizing it. after 3 months of enjoying my implanon a bad period came, with very bad cramps, constant breast tenderness, and as my boyfriend says &#039;severe jerkiness&#039;, that lasted for a month, and it has just ended.  i think i&#039;m back to liking the implanon. "