I agree with many others, that it looks like you're not eating enough!
I've lost about 70 lbs over the last year and a half or so. Here's some of my typical food
*As soon as I wake up, I have a piece of fruit (about 70 calories worth)
I need the carbs to do my workout, which I generally do about 1/2 hour later
*After my workout, I have a combination of carbs/protein. Sometimes I'll have 1 tbsp. of peanut butter (natural/organic) on some multigrain toast. Sometimes I'll have a cup of Greek Yogurt (if the taste is too much for you, try adding a tbsp of honey or maple syrup) and some berries or bananas. Sometimes I'll have a hard boiled egg or two and some fruit...
*Mid morning snack--usually a different selection from my breakfasts above
*lunch--1/2 Turkey sandwich on whole grain bread OR a salad (dark greens, not iceburg! chopped tomatoes if we have them, grilled skinless chicken breast) OR maybe some turkey chili
*Afternoon snack--maybe some carrots and broccoli with TzaTziki (a Greek cucumber Yogurt dressing, I buy it at Costco but it's available other places too!) or some greek yogurt if I haven't already had a lot that day...or maybe a banana with a tablespoon of peanut butter (my FAVORITE!!!!)
*Dinner--whatever I make for my family...I try to make it healthy.
The BIGGEST thing for me, is measuring my food, and recording it! EVERYTHING I put in my mouth is measured---I have a kitchen scale so i can weigh food, or I'll use measuring spoons/measuring cups, etc. I never just say that I had a "medium apple"--I always know how many grams the apple weighed. I never just pour some dressing on my salad, I measure out exactly 1 tablespoon.
Then I record it all on a site like Fitday or Sparkpeople. There are other sites with nutrition trackers too. That is how I make sure I don't eat too many calories each day.