Intense tooth pain after getting temporary crown on?

I went to the dentist on Tuesday and they prepped my tooth for a crown. A few hours after the numbing went away, I was in pain. I took ibuprofen that night. The next day it only hurt still. I made an appointment to see the dentist again. They figured the crown was too high. I went to the dentist and they lowered the crown, my tooth felt a little better. But, the pulsing pain is remains. Is it just my tooth being traumatized? This is a tooth that has had a root canal.