Can veneers be painful after getting them? Why is my teeth hurting constantly? (photo)

First off, the image you have provided appears as though you have 2 crowns and not veneers. As far as the sensitivity, this can occur when any work is done to a tooth. Most of the time it does subside, however as the doctor stated you make want to see a root canal specialist (endodontist). The reason the doctor said that was because sometimes during procedure, the nerve of the tooth can be irritated. Not because anything was done incorrectly but simply that is how your tooth is reacting. Another reason you could be sensitive is if your bite is off, causing trauma.