Etonogestrel
"My BC was placed about 2 years ago. Over all effective did not become pregnant but from the start I had horrible side effect with headaches, my hair falling out & no periods (so thought was a good thing). Then went on to having oily hair & skin, gaining weight, & heavy two week periods every two to three weeks. Now I have cysts on my ovaries monitored every six weeks. Next week it'll be removed :D"