Hi, I'm 17 and needs some help. I had the implant inserted in September  2016 at first my periods was okay and not to bad. During the next month I had a period nearly at the end of month .. then I came on towards the very end the same month and I've been on my period for nearly a month now is this normal or am I over thinking it. I'm also receive ignore really bad back pain and last night I felt something move in my back is that normal to