"i got nexplanon inserted approx. dec 16, 14. and it&#039;s june 4, 15. insertion wasn&#039;t bad, i was sore and had some bruising after.  my first 2 weeks i didn&#039;t spot or anything. since it&#039;s been spotting and light cramps, until recently now i also have ruthless cramps and periods. no acne, i&#039;ve lost weight, i&#039;ve always gotten  headaches. so the only complaint is the cramping making me miserable, it&#039;s effectiveness and the type of birth control it is good enough reason for me to leave it be."