Poor 404. I really sympathize I had someting similar last year. Tooth ache, back pain or ear ache is the worst.
The others are right, oil of clove is absolutely brilliant and you can get it in any chemist. Pop a bit on a cotton wool bud and then where it is hurting in your mouth - you'll get a little respite. I rang round all the dentists in my area and found an emergency NHS surgery in London, which I was able to get a same day appointment & had a tooth removed there and then. You really should not have to wait weeks - keep on it. Don't let them palm you off.