Is it still supposed to hurt 2 weeks after a root canal when i bite down on something?

Root canal pain: Root canal therapy is a surgery and can be sore for a long time, like any other surgery. We look for whether the discomfort is getting better or worse. If it is getting better even if it is slowly, that's a good sign. If you have swelling, a fever or increased pain, see your dentist or an endodontist for peace of mind.

It can: I wouldn't go so far as to say its "normal, " but i would comment that many teeth can take longer to completely respond than others. A small percentage of teeth will have persistent biting pain that never resolves without additional treatment. If concerned, see your dentist (or endodontist) for follow-up evaluations. I wouldn't be worried until 6 weeks.

No: Unless the root is fractured.

Pericimentitis: It is normal for a tooth to be sensitive to touch for a couple of days after completion of root canal therapy. This is called pericementitis and is the inflammation of the ligament that surrounds the tooth. The manipulations, or the trauma of the procedure can cause this. Two weeks is a long time for pericementitis and it is more likely residual infection that needs to be addressed.