Etonogestrel
"I've had Nexplanon for a little over a year now and I have not stopped bleeding since. I'm not having full periods but I'm constantly spotting throughout the day. I guess you can say it's a effective birth control due to the bleeding everyday I CAN'T HAVE SEX. The implant does sometime cause pain at the insertion area and lower back pain. I sometimes experience horrible migraines and I'm constantly tired and extremely moody. "