"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&#039;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&#039;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&#039;t like it after that remove it try something else."