Got to the point where i don't fancy any food to eat i'll be starving but nothing appeals to me, i get angry that i can't want anything, is that a eating disorder?

Likely. It would be prudent to consult a GI specialist if you have lost weight. You may need to consult a psychiatrist as well. Wish you good health!

This sounds like disordered eating, or at least a dubious relationship with food. Please discuss this with your primary care physician who may refer you to a nutritionist, a therapist, or mental health specialist.