eating disorders

I always thought eating disorders were only like anorexia and bulimia. I never have really had body issues but I also never really liked eating. I feel weak a lot of the time my hair and nails are brittle and I hate eating in front of people. Then when I do eat it's usually not very good for you and I eat a ton of it until I don't want to eat anymore. Then I've lost my appetite for dinner and Ive just been feeling like lately my stomach is getting smaller and smaller and sometimes I find I don't have enough energy to keep myself standing. then I got into a fight with my mom and she told me she thinks I do have a eating disorder. So I did some research and lo and behold there's this eating disorder called ARFID or Avoidant Restrictive Food Intake Disorder. I think that's me but I'm honestly not sure so I was wondering if you guys had any stories of you could share them bc I don't want to make this a bigger deal than it is but I'm also really scared bc I never thought that would be me.