Etonogestrel
"So for not getting pregnant, this option is great. However, if you're hoping to be a lucky one who does not have undesirable menstrual changes, think again. Most women have issues with this aspect and I am not an exception. I've had the implant for a full year now. I have not stopped bleeding at all.. Some days are lighter than others, but I'm still ALWAYS bleeding and it's very unfortunate but it's the only method that works for my husband and I."