It seems like the anxiety feeds the depression. Often they co-exisit. It's much worse at night.
I'm on a waiting list to see a doc, and will ask about Xanax, but ask for support that will help with the pain that I experience so acutely at night. That is the best way to describe it- pain. Acute pain.
I think the options many of you mentioned here sound good, thinking about going back on the WB but first trying Xanax on an as-needed basis. I always try the Chinese herbs first, self-acupuncture, and it helps a lot, but there are times.... arrgh. As a (future) practitioner, I would never tell a patient what path to follow. Integrating Eastern and Western medicine with talk therapy is a good way to go, but there are many options, depending on severity, budget, etc. Just having the tools I may need handy when I need them is a very good thing. Been there, done that!
Another reason I need something that won't make me spacey is that I have to be ON to help others.
Ninn, in Chinese medicine, it sounds like you have a yin deficiency-type of depression. That's the kind of depression I have. I can explain it if you like, it is quite interesting, I think, but I would risk turning into a complete nerd.
I like the fact that types of depression are differentiated in Chinese Medicine. I have also learned that the body requires energy to fall asleep. Seriously! And I know that I use up so much energy with worry and negative thinking that not only is my sympathetic nervous system on overdrive (the fight or flight system) but I'm literally "too tired to sleep". 
I am also studying a LOT on nutritional therapy for depression and anxiety, any of you, please feel free to ask questions if you wish, but I will not impose on anyone unless they ask.
Once again, this site is really helping me get through a very tough time.
Thank you so much!