birth control
"The first month I got nexpanon on in my arm I had some bad side effects like back pain cramps and nausea  but after that first month I didn't have any other side effects I did have a longer period I usually had literally a 3 day period in the first month of using nexplanon on I had it for two weeks but then I would miss periods or they would be short and now I don't get them at all I think it takes up too atheist 3 months for it to settle in your body which is why I was having some bad side affects but now I love it and it really at depends on  your body as we are all so different  ...So before you decide to get rid of it wait at least 3 months and if you don't like it after that remove it try something else."