If we knew what you ate in a typical day for the last three days minus the binge, we might be able to offer you some clarifying info.
In the meantime we are just guessing what might be going on?
a) you are restricting calories too much and getting hungry
b) your mood and therefore seratonin levels are low
c) your foods are not well balanced and therefore not satisfying. YOu want to have a balance of something like 55g carbs, 20 % fats (preferably mostly vegetable fats or fish fats) and 25% protein. You can adjust all these about 5-10% either way.
d)the foods you are eating lack nutrition and are highly processed and have a lot of calories for their weight.
e) you are not busy enough and haven't addressed boredom or other lifestyle factors
f)your sleep patterns are out and contributing to this problem and you are not getting enough daylight.
g) you are under stress or pressure.
h) you are going too long without food and getting hungry between meals.
Start keeping a food diary somewhere. show us what you are doing and we can help you tweak it.
do it here for a little while if you want.