Tell us all about how you eat when you're under unusual stress. Do you eat less? Do you eat more? Do you swerve into junk food or food that Mama used to make? Do you pull out all the stops and cook yourself something super fancy? Is it breakfast for dinner every day?
I tend to refuse to cook, then buy 3 vegetarian burritos from my local taqueria, stash them in the fridge, and slowly chow down on those for 3 days, breakfast, lunch, and dinner. After that I drink pureed vegetable soup (preferably tomato or pumpkin or broccoli-and-cheese) in a mug for the next several days. If stress continues after that, I pretty much stop eating and sleeping until I've solved the problem at hand.
I'm currently at the considering-buying-burritos phase.