Do I have eating disorder?

artgirl123
I'm underweight. Before, I couldn't eat much because my body is small and I get full too easily. I used to faint a lot because of this. The last time I fainted, it was more serious so I was rushed to the hospital. But after that day, I promised myself to eat more so I would never faint again. I think I have a phobia of fainting because I'm afraid of even talking about it. But in university, I've been stressing a lot for many reasons, and yesterday I scared myself because for the first time, I wanted to hurt myself by not eating anything. Usually I I'm not hungry so i can not eat food for at least 7-9 hours a day. but before I would force myself to eat so i wouldn't feel sick afterwards. but yesterday something happened that made me really upset so for 7 hours i wouldn't eat even though i was starting to feel dizzy. Is this some eating disorder or is this normal?
Do I have eating disorder?
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