Who diagnosed you?

I am not asking for a diagnoses or any sort, just curious if I could be going in right direction in figuring out what’s going on.
I (27f) have been dealing with a deep achey pain in front left of neck, sometimes radiating to jaw vein area, for almost a year. About 6 months ago I noticed other symptoms all on left side: ear fullness/ popping, always feels like something is in throat when dealing only ( like I’m swallowing only on right side), and a node near thyroid area that sometimes “gets in the way” when swallowing.
I finally seen a NP for these issues and she brought up tmj. I was told to go to a dentist to have them rule it out before we follow up with anything else. Does a dentist usually diagnose this? Am curious how.
! Sorry if not aloud! Thanks!