"i first got on nexplanon in march of 2015. within 2 weeks i got a very heavy &amp; painful period which lasted for 3 months. within 6 weeks i started getting very painful facial break outs. in addition to these breakouts, started getting thicker facial hair, more than the normal peach fuzz. but i would say the worst part of this birth control is that i gained over 40 lbs in one year. i went from being 130 to 172 in 12 months- without any diet changes. i work out 3-4 times a week and i still could not stop the weight gain.  i felt disgusted with myself."