I agree with you and I never went to dental school! Going to the dentist tomorrow. If he doesn't work out going to another. Did you get antibiotics that killed the infection?
Sorry to hear that. How did you come to need 12 of them?
I believe pain is a sign that something is wrong. Get another opinion. I am going through some major pain right now from an infection that got below the root canal and the infection went into the bone.
I can relate. I have had 12 root canals and still get pain in several of them. It is really annoying because they always tell you it looks *fine.*