carb/sugars headaches?

Last night I had about 600 calories to spare on the day and decided to
slurge when we went out to dinner even if it was going to exceed my 600 I
had left. I was hungry (tummy and head both). We went to Fudruckers and I
had a big cheeseburger and fries. What a HUGE Mistake that was!! I spent the
rest of the night holding my head in pain. Anyone ever experienced something
like this when you refeed or slurge? Or was this not the cause? I didn't
have an upset stomach or anything, just a blinding headache that lingered
even after I went to bed. I guess this is the first bread and potatos I've
had in 3 months or so.

Susan
280/188/140