"nexplanon has been the worst experience for me!!! i got it inserted june 18, 2015, didn&#039;t hurt too bad but the bruising was terrible and lasted about 1-2 weeks. i got my period a few days after the insertion and just got off last week. it&#039;s definitely good at preventing pregnancy (when i can even have sex) but the side effects are the worst thins i have ever experienced. constant nausea every day, horrible headaches that bc powders can&#039;t even help, i haven&#039;t noticed any weight gain yet however i literally feel so sick to my stomach that it makes my appetite go crazy and i want to eat everything and once i eat, not even an hour later is my tummy feeling empty and nauseous again. i don&#039;t recommend this unless you want the side effects, tbh."