I feel for you Deb, I really do.
I had a terrible encounter with a dentist years ago too.
But 3 weeks ago today I had a wisdom tooth out only under a local anesthetic. It wasn't as bad as what I thought (even though it was twisted, infected and too big for the gap intended).
Fingers crossed it all goes well for you.
Good over the counter painkillers are the red gel caps from Nurofen, kick in 5 minutes.