Allergic to implant material?

I had an implant on my lower jaw but the upper molar start to hurt. The implant was done five years ago. I had mouth guard made but was not helpful. I have headache and was told it is myfascia pain. The upper molar was removed and pain persist. I can not wear any earring due to sensitivity to metal. I wonder if the implant material could cause the problem. Thank yoi