Etonogestrel
"It was inserted November 2014 so it's been a year and four months. I get my period twice a month every other month. I'll get it a 7 days, it'll stop for one week then come back for another week. The bleeding was terrible at first but its regular/light now. Before insertion I got it for 4 days every 28days. I'm irritated and cry over everything. Sharp breast pains, terrible cramps, my hair is disgustingly oily now. I've also gained 30lbs w/o changing my diet so I ate less and gained 10 more. I'm getting it out Monday."