I would give the psychologist more time. She wrote something for your MD, to convince him of your need for meds and therapy perhaps? I'm not happy that there seems to be more than the MD can handle but he refuses to accept what another professional is saying. How did you get so far beyond the MD without his helping you before now?

Call the psychologist and chat for a minute or two about your anxiety and confusion over her letter to the MD (were you supposed to read it?) I think a good psychologist could put you at ease over this. Take your xanax at bedtime and get good sleep at least?

Good wishes.