Extreme Jaw Pain After Prep Work for Veneers and Installation, Normal?

Extreme jaw pain after prep work for veneers. I had prep work for 18 veneers done. The top teeth they prepped and I was fine, went back a week later for the bottoms to be prepped and in the middle of the procedure my jaw started hurting bad. The doctor had me pop a pill. A week later it was still hurting. Spent 4hours in the chair having the veneers installed. I was screaming in pain because of my jaw. 4 weeks later from the initial pain and it hasn't improved at all. Bite adjustments haven't helped