do I really have to have more calories?

You are eating a high fibre diet with all the fruit and veg and the legumes. However having had an eating disorder you are probably finding it hard to allow yourself to eat the fat that is an essential part of a healthy diet and that is why you are eating insufficient calories. If you could add some oily fish or 2 tsp a day of healthy fat such as olive oil, coconut or hemp oil to your diet this would help you meet your minimum calorie goal. I've put some links in the info as to why oil is healthy as I imagine you'll have to work hard to persuade yourself to eat them. But you do need them for your health... Not only do they keep your hair, nails and internal organs healthy but they also make it possible for your body to take in certain vitamins that need oil for you to digest. That makes oil an essential part of your nutrition.

Here’s a good low-carb food/exercise plan:

Breakfast: Cook 9-grain cereal (from health food store) in water with rolled oats and wheat bran. Make a pot of it on weekends and nuke 1 cup each morning. Then stir in low fat milk or yogurt, banana, walnuts and berries. Drink hot Ovaltine. Breakfast should be your largest meal of the day to raise blood sugar level which falls during the night.

Lunch: Egg, tuna or turkey sandwich on multi-grain (not just whole wheat) bread with bean or alfalfa sprouts, yogurt, fresh fruit. If you had meat loaf for dinner, bring a meat loaf sandwich on whole grain bread (NO mayo). On cold days, a squatty thermos of hot chili, split peas with ham, or beef stew.

Snacks: Fresh (not canned) fruit. Nothing ever from a vending machine.

Fruit smoothies with protein powder, yogurt and berries.

Dinner: salad with white meat chicken and fresh (not canned) veggies: tomatoes, 2 kinds of lettuce, 2 kinds of shredded cabbage, shredded or sliced carrots, alfalfa or bean sprouts, zucchini, green or red peppers, hard boiled eggs, brussels sprouts, broccoli, cauliflower, tofu, cottage cheese, spinach...Instead of dressing, squeeze 1/4 tomato over it.

Or homemade bean/vegetable soups; great way to recycle leftovers.

Or grilled fish with steamed veggies.

Or omelet: In blender, whip together eggs, tofu, cottage cheese, onions, garlic powder. Cook with mushrooms, chopped tomatoes and green or red peppers.

Avoid junk food, fast foods, gluten, pastries, desserts, syrup (even canned fruit in syrup), peanut butter, fat/grease (pork, wieners, chops, bacon, salami, pizza, chips, fries), pasta, potatoes, ramen, popcorn, white bread, rice, canned veggies, ice cream (it’s lard + chemicals), chips, tobacco, alcohol (kills brain cells).coffee (carcinogenic). no oil except olive and mac nut. Sodas (loaded with toxins; leads to stroke, obesity, kidney damage, high BP and inhibits bone growth in kids), anything with sugar (cancer cells feed on sugar, it wreaks havoc on your liver, mucks up metabolism, impairs brain function, makes you more susceptible to heart disease and diabetes),

To keep your skin clear, drink water, tea, veggie juice, unsweetened fruit juice.

Join a gym; they have all the equipment and staff to show you how to use it to get the look you want to achieve, but you have to ask them. Much cheaper than buying your own equipment. Go hiking, biking, jogging, bowling, swimming, rowing, jump rope, play tennis, badminton, volleyball, soccer, jumping jacks, lift weights, trampoline? To tone your tummy, do sit ups, push ups, pull ups, leg lifts, butt raises and crunches.

For more energy, take Super B complex.