Etonogestrel
"I knew I wanted Nexplanon before I even had my daughter. I had the implant put in at the end of January  and I had a month long FULL "period" (post partum bleeding had stopped prior too). As of now, I am experiencing lighter periods, but I seem to spot every other week. I'm also experiencing the WORST mood swings EVER. It's actually scary. I'm not one who is usually sensitive to any med, but I'm on the verge of having this removed."