"i got nexplanon implanted the beginning of 2014 . had bruising and soreness for like a week or two but wasn&#039;t too bad . havent had any periods since i got it which i love . very good prevention against pregnancy though :) . but the past year i&#039;ve had the most awful headaches . not much weight gain though . i love it ! after my 3 years i&#039;m so getting it again !!"