"i am on my second round of nexplanon. i completed the first three years, and it was changed out, a new one was put in. at the beginning, i have mood swings and headaches, yes my bleeding was irregular, but i was advised to head of time to be patient for things to settle. it did take about 4 months to settle, but after that i was regular. i put on about 10 pounds, but most of that has to do with my lack of exercise. i would definitely recommend anyone try nexplanon. with a little patience, it&#039;s worth it"