Help with an aching tooth?

I have a super duper phobia of dentists, due to a bad experience. However, lately have had a lot of dental work and more to go. One issue I’m having is my wisdom tooth was filled. This was a few months ago. When the anesthetic wore off, it hurt like the blazes. But settled. Then recently began to ache again and got worse.

So off to the dentist I went and he said the bite was off,he filed it down, no anesthetic ouch! Its still aching. He X-Rayed all three teeth to check and all good. All roots fine no issues. Is it just sensitized from ‘pressure?’ I know you are not all dentists but thoughts I’d try anyway. I really don’t fancy going back since he said its all OK and not my favorite place either.