Still numb after 5 days?

I went to the dentist on Wednesday afternoon to get a surgery done. What he did was cut out part of my root from the second to last tooth on my right side. Three years ago I had a root c done on the same tooth. He gave me five shots of Novocaine during my surgery on Wednesday. Five days later, I'm still slightly numb on the right side of my lip and a little on my chin. Is this normal? I have read that it might be a bruised nerve and that it could take weeks to go away, or it could even be permanent. I'm seeing my dentist in a week and a half to get stitches removed, so should I wait it out until then?