Eating disorder question...?

Sounds like you are definitely headed down a bad path. 450 calories a day is not good. The average person eats 2,000 and I wouldn't recommend under 1,200. Only purging once does not make you a bulimic but it certainly puts you in great danger of becoming one especially if you constantly consider doing it again. 450 calories is starvation not a diet. I would highly recommend you seek some help before you ruin your health. Best of luck to you.