your metabolism has just slowed down, it's normal for that to happen when you're losing weight, your body's trying to keep as much calories and fat supply as it can
Itll get back to normal when your body's used to the changes in your diet and how you're eating
that would probably be another factor, yes
i think you should try to work on that, then, and not giving in the urge to binge, even though I know it's easier said than done