I'm sorry that the hospital is your only other option...I guess I'm lucky in the sense that if my pdoc is unavailable and I need a med change but am not in crisis (in danger of sui), his nurse finds an opening with one of the other pdocs that work there.
I hope you are able to hang on until you see her, but if things do get worse, please go in to the hospital. Sometimes it's better to spend a couple of days there than to wait until things spiral completely out of control to the point where you need to spend a week or two in the hospital.
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From the movie The Hours: "If I were thinking clearly, Leonard, I would tell you that I wrestle alone in the dark, in the deep dark, and that only I can know. Only I can understand my condition. You live with the threat, you tell me you live with the threat of my extinction. Leonard, I live with it too."