Had surgery to remove impacted wisdom tooth 8 days ago. have had lots of pain and taken ibuprofen daily which helps. finished 7 day course clindamycin yesterday. pain is improving but still feel exhausted and unwell. could this be normal?

I don't think that postop fatigue is unusual given the degree of persistent pain you experienced. In addition inflammation from oral surgery & healing process make the body work hard. I also wonder if you had difficulty tolerating a good diet or had sleep disturbance.

If the surgical site is healing well and the swelling has resolved you should be fine. By this time, you should not dependent on Ibuprofen any more. As a kidney doctor, I always have concern about using Ibuprofen continuously for more than 3 days. You should stop Ibuprofen if you are still taking it and if pain recurs, you may need to see your dentist for checking the surgical site.