Tooth pain and dentist cant see problem * advice needed asap*

[livinlife]

Did some root canals few mo ths back and few fillings and now one troth on top tooth starting to hurt specially when pressing on it and senstive with mouthwashing and liquids. He checked the bite and tested and checked xray serval times and it shows nothing wrong.

He told me to go to speicaist but thats alot of $$$

should i tell him just do a rootcanal would it take care of the problem or no? Soeciast would chare 1000s area.

Please advice

 

[livinlife]

Noone can take a guess at it?