I cant no longer eat is that bad?

[Thunderblot]

So when i was young i used to eat all the time and i mean all the time and i never felt full but i never felt hurgy and later on i in elementary school i started to take my lunch to school and slowing going through elementary school middle school and high school i kept givig my food away and slow stop eating now a days i dont eat anything and when i try to my stomach rejects it like in the first bite and even my brain say no so now when im with my family i try to eat but no matter how hard i try to eat and try to want to eat my whole body rejects it and idk what to do and idk whats wrong with me