I agree with MsSammy and Rose. I think that calorie intake is way low ... especially for the activity level you are showing. If you are not taking in enough calories, the body will adjust its processess to make sure that it survives, no matter how much activity you are doing.

The real trick is finding that fine line of caloric intake and activity that will trick your body. Lots of trial and error.

If you need those carbs, why not try putting them in your post workout meal? I have found that it really helps my recovery and I don't feel like such a zombie.