Many times anorexia can be very well associated with Bipolar disorder. As I, when I am in one of my down swings, I tend to not eat. Sometimes for days.
I would try and talk to your doctor and see if you can start on a high fiber diet or something so you at least have something substancial in your stomach.

I was so much smaller than everyone else.All my life i was the smallest girl. Now as adult i am still usually one of the if not the smallest in the room. If you are good to your mind,body,and your needs you will see your true and most ideal self in the mirror looking back at you.