I had a root canal treatment done on the tooth #30 about 5 years ago,
then the tooth was covered by a crown. A recent x-ray showed that there
was an infection on the root of the tooth, and my dentist sent me to an
endodontist. So two days ago I went to the endo- and underwent a 2-hour
root canal procedure. The doctor removed the crown, did the root canal
treatment, which involved lots of different instruments and syringes,
and prepared the tooth for a new crown (build-up). I was absolutely
fine after the procedure----no pain, no swelling.

However, I started having dull pain the next day, and now, two days
later, the pain is so strong that I have to take 800mg ibuprofen every
4 hours. It feels like pain of the jaw/bone.

There is no swelling. Everything looks normal, just hurts a lot.

My questions are:

1) is it normal to have such pain?
2) does it indicate of any serious complication/infection?
3) does it mean that I'm going to have to undergo RCT again?
4) is it likely to go away eventually?
5) do I have to take antibiotics?
I have a problem with antibiotics, having taken lots of them in the
past few years. I have really bad stomach reaction to most antibiotics
and I suspect that I'm resistant, since I've never completed the
numerous courses I've had to start (mostly after dental works which I
have all the time).

As of right now what I fear the most is the possiblity of
infection/another root canal/extraction. This pain worries me. If I
knew that it's normal to have pain after such treatment I would relax
and just take painkillers. :) Having no swelling is a good sign, it
gives me hope/

Thanks in advance for any comments/advice.

Diana