The first time I had a panic attack in therapy I just sat there and suffered. Totally checked out. If I hadn't been so paralyzed I would have done the same thing you did, just left. Agitation is all a part of the rising anxiety IMO.

I mean who wouldn't want to get out of that situation? Really, I see absolutely positively nothing to be embarrassed about.

I frequently do walk abouts in my therapist's office, but it is so small I just end up walking back and forth.

In the long run I think it would be beneficial if you try to tell your therapist what happened and perhaps look at what was going on that day before you even got to therapy.

Something set these feelings in motion and I think it would help to explore what that something is.

I hope you feel better today. Take it easy on yourself. You had a really hard day yesterday.