Hi... Persistent pain 7 days after a surgical procedure to extract the tooth could be due to an impaired healing condition such as "dry socket", foreign debris or food stuck in the socket, an infected socket, or from adjacent teeth (pressure on the adjacent tooth during the extraction causing inflammation in the tissues around it leading to pain, or decay in these teeth).
In any case, if your problem is persisting, please see your dentist or surgeon again so they can take a closer look at the area and institute appropriate treatment.
If you are still unsatisfied with the opinion of your surgeon, you can seek a second opinion from another oral surgeon.
Next Steps
Seek an appointment with your dentist or surgeon again for a re-evaluation.
Health Tips
In the meantime, you may use frequent warm salt water rinses several times a day to try and reduce the inflammation in the tissues and its associated pain. Also take the prescribed painkillers as necessary.