I understand your depression as well.
I agree with the others here, call the therapist in the am, or go to the hospital if you need to....many others have done it as well. you have nothing to be ashamed of at all!!!
can any family come and stay with you for a few days? or you go see them when you have a day or two over the weekend. I know when I am at my worst I don't come out of the house for weeks, but when I let my family visit me, it makes all the difference. Im pretty bad right now too....but I can remember a time when I made a schedule for myself and stuck to it, even if I didn't want to. I would make sure to have someone over for dinner every week and go visit someone close to me on the weekend. That way I never felt like I had been alone for too long.
Just remember we are here for you....