Eating disorders?? Help?

Sasha

I think I'm at risk of developing an eating disorder. I know I'm not too fat but there's something in my head that keeps telling me to stop eating or I'll be ugly and nobody will ever want me. I have been gradually reducing my food portions, skipping breakfast and sometimes dinner for some days and I think my family is starting to notice it.

I was underweight when I was like 11 until I was 14, and looking back to pictures of my mom and my grandma when they were my age (19) and they were so skinny makes me want to look like them.

Also, I see girls who are bigger than me all the time and I don't think they are ugly or anything like that, I just think that of myself.

I really don't know what to do.