I'm not trying to be antagonistic either, but the way you described yourself is very disturbing.
"Also i look extremely ill, like something out of a concentration camp, my teeth look too big for my head, very dark circles, like a skeleton really and i just feel a little frightened.my poor father thinks iv an eating disorder. can anyone help me please? is this all normal?"
And you ask -- is this normal?
No it is not. Do you expect from anyone to tell you that it is. You are obviously playing with your health and with your life. Perhaps, someone has to tell you that.
Regarding my fast, after 21+17 fasting days I still have more weight that I need, I do not have dark circles, my eyes are bright and my cheeks are pink.