I feel as though my implant may be too large. What should I do?

It is highly unlikely that those symptoms are being caused by the implant one month out, but have you dentist do an exam and xray just to be sure.  

you may have developed an infection around the implant.  I would return to the doctor and get an X Ray to help determine the cause.

Hi there, I think you should go back to your surgeon's office to evaluate the area and determine if the jaw pain is related to the procedure that was done.

It would be unusual for these symptoms to be related to your implant one month after the surgery.  Infections do happen, however, so please return to your surgeon to have an x-ray and exam and receive any needed treatment.

Pain after a month following implant and bone grafting surgery is certainly concerning. Your surgeon should evaluate the site for signs of inflammation or infection and determine the health of the surrounding tissues.

It is really important that you go to your dentist and tell about your situation. It could be an infection caused by the implant or maybe your boddy is not acepting it at it should do it. 

If you have been pain free for a month and are now having sore throat and discomfort I suggest you consider other options. It is doubtful that these are caused by the implant.