How To Cure Sharp Pain In Arms And Blisters After Having A Implanon?

Yes, I got implanon about two weeks ago. I had an allergic reaction to something that was put on my arm and the blisters are now going away. But there is still one bump from where my implanon starts and I have this sharp pain in my arm and everyday it moves down and won't go away. Now its from my wrist up. Could it be the implanon?