Possible infection surrounding extraction zone

[ryan f]

(PHOTO) I had a wisdom tooth extraction performed one week ago. I went to get it checked out yesterday morning and the dentist said it was fine but I'm skeptical as it was not a very thorough check.
I have only now noticed a significant wound on the inside of my cheek and discoloration around the inside of my mouth with a noticeable amount of discomfort. any help and opinions would be greatly appreciated

 

[DIG IT]

That looks infected; I hope that by now you have seen a Doctor about Antibiotics and that you are okay.