Does Implanon Cause Discomfort In Neck And Numbness In Arm?

hi, today its my second day with implanon, they said I shouldnt feel any pain (appart from the bruise) but I feel very uncomfortable, my neck is not in pain but feels unconfortable to move, my arm feels "numb/weak" and my shoulder very restrained even from a light handbag!....Im worried this is not normal and that my body is rejecting the new "object" please advise me, I know is early days but better than sorry...