Can Implanon Cause Arm Pain?

Hy my name is tania im 20. I had my implanon put on may 14 a monh ago but afther 2 weecks my arm keeps hurtting in times worst than others,but whn this hurts fill the pain al the way to my elvow is this normal. Another thing i habent had a period since april 26. Could hat be because im iregular.