Ow, Ow, Ow!!! OB's had some of that kind of work, and it is exceedingly painful (both physically and monetarily). You have our condolences.
Yeah, this is the tooth I had the root canal on last year about this time (and subsequent billing issues). The root canal is okay, but the tooth is cracked and has to come out. Surgeries involve putting in an implant for a new crown. We're not looking forward to this...