Etonogestrel
"First couple of months I had a longer then usual period. After about 2 months in it completely stopped although I had light craps and mood swings through out the first couple of months no weight gain. Perks of having the implant, not having to worry about missed pills (although I was never good at taking pill form birth control) No shot and yet still having periods ! All around the implants been good to me. Would highly recommend it to anyone with an irregular period!!!   Haha good luck ladies!"