Since you had an MRI done, they would tell you if you have a TMJ issue. If you get a copy of the report it will be in there. You may need to sit on google and look up every second word to wade through the medical language though. Those things are not easy to read, although not impossible. You may not understand the nuiances but should be able to get the general gist.
You would also know from symptoms if you had a TMJ problem. Facial pain, grinding noises in the joints, that type of thing. If it is found you have nothing structurally wrong but are having pain I suggest seeing a physio therapist. They can work miracles. They are sometimes called physical therapists depending on your country.
Good luck in your journey.
I put a second image of this MRI on my profile pictures.