I'm not 100% therapists can diagnose patients. Psychiatrists can, but a therapist? I think they can suggest that you go to a psychiatrist to get it checked out.

In any case, a good psychiatrist (like mine for example) will rule out thyroid issues and such.

I do agree that you should ask something along the lines of "So what do you think is causing "X" (symptoms)?"

Good luck with everything OP.