I think you are definitely not eating enough food overall. I'm around the same weight as you are, and I'll give you an idea of what I eat in a particular day.
B- eggs (one whole, one white) with 1/2 c. sauteed veggies (cooked in a little olive oil), usually either a piece of canadian bacon or a serving of reduced fat cheese, a slice of ezekial bread with a t. of sugar free jam
L- a large chicken salad (3-4 oz. of chicken, lettuce, spinach, red onions, cherry tomatoes, cucumbers, and peppers) with 1 T. salad dressing, a piece of fruit
S- a cup of plain non-fat greek yogurt, 1/2 c. sliced strawberries, and a packet of powdered stevia
D- 3-4 oz. meat or fish, a serving of whole grain (usually quinoa or brown rice, sometimes sweet potato), and a large serving of veggies cooked in olive oil
S- usually nuts, sometimes with something sweet (no sugar added fudgsicle) or maybe a little cheese, a couple times a week I'll have a small glass of wine
I think overall, you need to add more veggies, make sure to get in your good fats, don't be afraid to add in whole grains or starchy veggies. HTH
SW- 216.8 (July 2009)