Etonogestrel
"I had this implant inserted in July of 2015 and now, almost November, i haven't stopped bleeding since the week after I had it inserted. Also my mood has completely changed. My mom tells me that I'm not the same happy person anymore and I've gained 10 pounds. I exercise regularly and eat healthy. It's a great birth control for preventing pregnancy because there's non stop bleeding! Don't recommend this at all. Better experience with the pill"