Now a Serious Infection

I am so frustrated with this. I have really horrible pain in my tooth and gums. I had an allergic reaction yesterday to the antibiotic I was on. I had to really push to be seen by an endodontist, who is charging me $100 and said to just wait it out and gave me steroids and more antiobiotics. He also warned that all of this flying makes everything worse. I'm really afraid right now because I just really feel like something's really wrong. I don't trust these endodontists because they all tell me something different, and nothing is making this better. I'm afraid to have the tooth pulled because my dentist is seriously against it, and it sounds like a painful and expensive procedure. I'm dizzy and tired all the time and just really out of it. I have no energy to work. And, dental procedures are really scary for people with PTSD. Not to mention that my dad made a really big deal about not wanting me to have the root canal in the first place and thinks I should have the tooth pulled. I feel cold all the time (although I took temp. and don't have a fever); my stomach hurts. I'm just really frightened. *A* has been going to the pharmacy for me, which has been a big help, and my dentist was nice enough to get me into an endodontist this morning, but I really feel like no one has really figured out what's going on and knows if they can fix it. It might get worse and they seem to have no good options. Everything is painful, expensive, time consuming, and I'm supposed to somehow get on a plane next week and fly back to KC (and so dentists really don't even want to start anything here). Does anyone else have experience with root canals?