Could be a form of agitated depression. Most of my depressions are agitated. And anxiety comes along for the ride with agitated depression quite often. I agree with your therapist: go see a psychiatrist. Medication might help and, really, as much as I love therapists, a psychiatrist should be able to give you a more detailed explanation, or, at the very least, treat your symptom with the proper medications, even if you are not diagnosed with anything specific outright.