MissJD .........
I too have had too much dental work in the past .... and the anxiety levels as well.
Try to get that one tooth pulled as soon as possible. It's always very possible it is an absess (sp?). And if so, it's dangerous to have that remaining in your mouth - besides being painfull.
And once it's gone, you don't have to proceed any farther for awhile - especially due to expenses. It does not have to be replaced immediately - assumming its somewhere in the back.
Time to feel better.
Rob & Gizmo