Hi walkingbyfaith, so far I'm not doing too bad, I was terribly worried I'd be in a really bad flare again. My headaches keep coming and going and I have all sorts of tingling and the occasional stabbing feeling (not a good feeling) on the left side of my head, same side I had the work done, it happens to also be the same side (except it's now the bottom back teeth) I had a terrible infection in my upper back tooth that went into my sinuses and I ended up having it pulled, no more root canals for me! No idea if it's the Lyme/co-infections that caused all this? The dentist did a thorough job getting as much into the area before filling it up and perhaps he did it after too, can't remember for sure. It's so scary doing anything that can stirs things up but I guess at the same time it's not good to leave an infection either. Good luck with what you decide to do and keep me posted, I'll do the same!