I had a tooth pulled a week ago and it hurts worse now and side of face hurts, should i be concerned?

Possible abscess : You should be seen in clinic or back at your dentist. It's possible you have an infection or dry socket.

Yes: After a week, you should be starting to feel better. You need to get in to see your dentist for evaluation of infection or other complications. Good luck!

Post extraction pain: You should be feeling better by now. I can't tell you why you still have pain but the extracting dentist can tell you. What is going on. See them ASAP.

Tooth pain: Visit your dentist again to see if you have infection or dry socket.

Yes: Some soreness is normal, but this sounds a little more than that. Go back to see the Dentist/Oral Surgeon who extracted it for follow-up. Call and ask to be seen tomorrow as an emergency, stating that the pain is worse. They should get yo in and help you out with this. Good Luck.