I think my crown is too big. What can I do? (Photo)

A crown was put on my back molar, next to the last tooth on the right side, due to a crack in my tooth. It is bigger than my other teeth, it sticks out farther than the other teeth.It looks nothing like my other teeth. It hurts when I chew, and even when I'm not eating. I told the dentist that I thought it was too big, and he said it fits along the gum line. I have been back for bite adjustments 3 times already. Is there anything else I can do? This has been going on for about 4 months now.