"i started nexplanon august 2015 after i had previously been on loseasonique birth control for 7 years, which gave me periods every 3 months.  the first 6 months on nexplanon were great, no period!  then i started getting cystic acne, deep painful acne under the skin that wouldn&#039;t go away.  i tried everything to get rid of the acne but nothing helped, my obgyn said it was hormonal due to the implant.  then i started getting irregular periods, and it was dark brown and clumpy.  fast forward to february 2017, my acne is down to 2 bumps at a time but the periods start and stop without notice.  some days it&#039;ll be so bad that i even get cramps.  is it great that i don&#039;t have to worry about taking a pill? - yes.  but the side effects suck."