I had the exact same thing happen to me, braces previous teeth removed, pain relief / anethestic not working and then to top it off four impacted wisdom teeth and because I left them for my pregnancy with ds and didn't get seen to..... Two more rotten molars to boot.

I went to the dentist in extreme pain, only using the clove oil the chemist recommended as I don't take ANY pain relief ever. I don't believe in drugs to take away headaches etc. I also wouldn't take anything whist pregnant as my MIL is a acquired brain injury specialist and would never let me live it down, as she knows, has seen and deals with the effects everyday of brain injury because of drugs, medication etc.... Anyhow.....

go get them out now, Book into a different dentist, complain to the one you are seeing now, you cannot be forced to wait when you are pregnant and taking medication because of the pain. ....

I was 14 weeks pregnant with my daughter when I had mine taken out. Only three needles of local, ( they wanted to use ten but I insisted I didn't want it, and I had the four impacted ones cut out, and another removed. At the same time, in the chair and although I felt shaking ( temporarily went into shock I think ) after ten minutes I drove home, was fine and they didn't hurt me again, seriously as soon as they are out they stop hurting....

My nerves were also in a difficult place and risked paralysis etc.... But the pain isn't worth living with, it stops you from being the parent you want to be, and will certainly affect your baby taking all that medication for relief.