I might be wrong but...

In the past week I haven't been eating that much sugar..just maybe some jam here and a white hamburger bun there...but over the weekend my mother brought home a pint of ice cream and a bunch of other stuff I would rather avoid. But I ate the pint of ice cream and a slice of cake. Now I feel really weepy, blue, very reactive, sensitive...kinda like this.. :s6( :s9( Could this be a reaction from suddenly eating so much sugar at once?