If you are in pain now, you will love it when they are finished with the root canal. I have had six of them over the years, and every time I went from feeling absolutely horrible to 100% in the 1 hour it took them to do the operation.
The only thing that is not comfortable are the initial numbing shots.
Make sure they get you good and numb. If you have any doubt as to whether you need another shot, just get another shot.
After 3 or 4 or 5 shots of numbing agent, you won’t feel a thing.
Once the numbing wears off you will feel totally fine.
It’s really not that bad, much better than living with tooth pain.
Also, ask for a big gloop of topical anesthetic where they are planning to do the injections, it helps a little bit.
Lastly, ask for 10 milligrams of diazepam if you have someone to drive you. A little benzo to take the edge off goes a super long way and dentists have no problem prescribing it. Have the dentist prescribe it and take it 1 hour before the appointment. I am 200lbs and 10mg does the trick.