How's your food intake been? I know you've been really hard on yourself in the past couple of weeks with the food in your parents' house tripping you up. I know when I get into those yoyo sort of circumstances my mood is always altered. Things that I could have easily taken in stride one day really weigh on me the next. It makes things terribly difficult.
I know that doesn't really answer your question, per se, but sometimes just being conscious of potential cause and effect can make all the difference.