Etonogestrel
"So I got my birth control put in on Oct 23rd, 2015 . At first , I didn't bleed whatsoever . Three weeks after , I began spotting . I wasn't really worried because I just thought it would be a week thing. Nope . it's Dec 27th 2015 and I've been bleeding ever since . It's not light either, its a very heavy period . So yeah, hopefully you're one of the lucky ones who doesn't bleed at all ."