cheesy I know, but try to love your self and concentrate more on just eating and bing healthy than how you calorie intake I know its more easily said than done but it is true. Good luck! 

you should eat normally according to what you want to eat, and stop considering if you will gain weight or loss it. well I know is easy to say, but I think the problem is what you think other poeple think of you, body is not the important, spiritual life is what you get in the end, the rest is just vanity, vain, something that serves to no good end at all, just something that is accesory under the apropiate circumstance, not something you should put any effort into it....

If you can get really into a hobby (old or brand-new), that'll simply fill some of the time that you'd otherwise be tempted to spend exercising. Having something to get excited about can do a lot of good.

As for another thing to think about, do you find that your friends/people you spend time with are very focused on body-image / appearance? If so, you may need to find ways to remove yourself from toxic social interactions if you can, or call your friends out on it so that they keep it to themselves.

Also, sometimes anorexia and other eating disorders are more about control than about appearance. Are there things in your life that you feel like you have no control over? Are there other healthier ways you can assert more control in your life? (Being very diligent about a hobby is another way to practice control. Artistic expression and open-ended gaming are other ways...)
^ I say this because stressful changes (even study abroad experiences), terminal illness and other events that feel out of people's control can be very triggering even for those who have never battled an eating disorder before

It's a good thing you're concerned and taking this seriously. Please try to stay open with people in your support network about what's going on and reach out for help when you need it.

How much do you weigh?

I use to have one, I wanted to be thinner and look better but what it does to you is make you sick and look worse.
Eating normal meals is a good thing Your body needs food to function.

I used to have an eating disorder, and I might not know exactly what you're going through, but something I found that helped me with it was setting goals- be sure not to eat too many fatty foods to gain weight, but rather try and gain weight with healthy foods (protein drinks like BOOST, I found , help). Anyways, I would set a goal for myself- maybe have the ame goal for a week, trying to reach that goal daily- and then raising the goal expectations as I got used to the previous goal.

I think you should see a professional psychiatrist, they could help you evaluate these thoughts and understand the root of the problem. Also, consider seeing a nutritionist.

As for my advice (And I've had both anorexia and bullimia); You need to remember that no matter what, you are valuable. Being alive is wonderful, but we as people do have to... create our own life, decide what's best for us. Even if that means making some uncomfortable decisions.

Distract yourself from the thoughts you're having about food, and excersise. Take up new interests like maybe sewing, painting, playing the guitar or learning martial arts. You could also reserve one day of the week to just stay inside, eat ben & jerry's and watch movies all day. You could quote, review and otherwise disect the movies. Maybe even do it with someone you love; and remember that they care about you and want you to stay alive.

Baking/cooking, for example, would be a wonderful activity since not only is it a useful skill to have in life, but it also allows you to create all kinds of culinary marvels like for example:
S'mores-pie,
tiramisu,
peanut butter cookies,
strawberry cake,
homemade ice cream,
rack of lamb,
chicken fettuccine alfredo,
meatloaf with mushrooms,
vegetarian lentil hamburgers with basil dressing and sun dried tomatoes
homemade pizza

If you don't feel comfortable with eating sweets; feel free to pick healthier alternatives, like strawberries with vanilla, greek yoghurt and bananas. Maybe with some toasted  almonds and honey on top.

You SHOULD excercise, It's good for your heart, muscle, joints and also your appetite. Just make sure you don't do it because you're forcing yourself to, or you'll make it into something depressing. You need to do it to keep your heart healthy, keep your body strong, and make up for the times you starved it, or purged, or cut it; or what ever you did to abuse yourself. Excersise, when done right, also makes you feel awesome and surprisingly enough, energized. It produces the chemical Dopamine, which works as a neurotransmitter in the brain and helps you feel genuinely happy.

Humans are social creatures, so surround yourself with people you love. If you're lonely or feel like your friends don't care about you, try to meet new people. Friends and family can help you focus on the good things in life.