I can tell you from experience as far as medicines go, you can actually take some of the lower dosage narcotic pain meds.
It is not necessary for you to suffer in pain because you are pregnant. You can go to the dentist and get that tooth pulled and also take vicodan or t3 or if it is bad enough percocet to help with pain. Taking too much tylenol is far worse for the baby than taking a low dose narotic pain reliever.
You need to get a referal from your ob to a dentist that he/she works with. Ob docs normally have a list of specialists that they reommend because they spcialize is working with ob paitents.
If a medical professonal refuses to work on you because you are pregnant, you need to find another because they are telling you they ar not compotenet in emergency medicine that may be necessary from the procedure you are having. Regardless of your satus, if a doc cannot help you in an emergency then you need to go to one that is compotent not only in their chosen field (i.E. Dentristy) but also in emergency resecitation if you pass out or go into shock.
Hope this helps,
-brian