Eating Disorders

I was way below weight for a long time. For several years, I would track my calorie intake closely. I tried to force myself into eating less than 500 calories/day and I would cut myself when I failed. For the last couple years, I've been trying to force myself to gain weight. My body is definitely in starvation mode, so I almost never have an appetite and I just feel sick all of the time. I finally got up to the bottom of my healthy range of weight, which in itself makes me feel compelled to restrict my eating. I have a bunch of people in my life (the sort you can't just cut out) that are just really negative all the time that make it so much harder for me to be healthy. Everyone still just tells me I look too skinny and it's like, if no one will ever notice how hard I've been working and how uncomfortable I'm already feeling with the amount of weight I've gained why should I bother trying? The only way I can handle this is to not think about my weight...I don't have a scale or anything at home...but I end up fixating whenever anyone else comments on it. Does anyone know how to deal with this kind of thing? Like how do you learn to ignore the comments people make about your body and stay on track?