I’m sorry a lot. Do you have the possibility to connect him/her by phone before 29th or even try to set the appointment earlier. You know, sometimes people annul or delay their appointments.

I don’t know how your strength is but if you can do some of physical exercise, even a mild one. Maybe, it can help you a little.
P.S.: I was reading again your main post and you said that you don’t trust your therapist. I wonder if in your country is the therapist who also prescribes medication. In my country has to be the psychiatrist. What I want to mean is that if you don’t trust your therapist, I doubt anything good could get out of it.
Wonder why you don’t trust her, just in case it could be a hard step for you on the therapy. It could happen. Sometimes we are not ready to work on a certain point. But, if it’s an objective lack of confidence, if you can change of therapist. I know that it’s very important you trust the professional.