Assuming that you ate enough to knock you out of ketosis, it will take you
a day or two to get back into ketosis, depending on what else you
ate/eat.

Your hunger will probably be related to being in ketosis. My experience is
that if I don't enough to knock me out of ketosis, nothing happens, except
that I taste that "tasty" food again, wanting it again.

But, I may gain a pound or two as I store water along with the extra
carbs.

Becky P.
http://www.family.solidrockpl.org/html/my_diet_.html