I think you should see a doctor. There is a link [here]
for those who ask "Do I have anorexia or bulimia?"
Is it that you can't physically force yourself to eat? Or that you aren't hungry? Or you just don't want to? Have you thought about why you feel like this?
Eating 100kcal a day isn't good, and it isn't advisable. You should be eating at least 1,200 - and thats if you are wanting to lose weight. The average is around 2,000kcal.
Out of interest, how much were you eating while dieting? And a couple of stone since NY is good, as long as it was lost healthily.
You've probably heard/tried this, but have you thought of things easier on your stomach, things like soup and yoghurt? Or even drinks, like mikshakes, or the "weight-watchers" shakes? There is also a link [here]
to some healthy, low cal food ideas.
Do you think of foods in terms of calories, or just foods? Sorry for asking so many questions, I am just trying to understand a little more about you.
Do you feel healthy? Are you comfortable with yourself? Have you lost control of something recently?
This can get really rather bad. There is (another =P) link [here]
to some ideas of how out of control this can get.
In terms of an eating disorder, I don't think you would be diagnosed with one. However, this is extremly dangerous, and something that if you can, you should get out of ASAP.
Please try talking to a doctor, get an emergency appointment.
If you need anything, please feel free to PM me.
Take care, Jo x x