Kalli...

Yes, that's very typical of what happens when you are following low carb and then give your body a big carb jolt. It causes an insulin response which can make your blood sugars unstable again and lead to the increased hunger and cravings until your body can get rid of the excess glucose and stabilize again.
Every time I have done what you did I've had the same response; increased cravings and hunger for 3-5 days afterwards (which is about how long it will take on average to get back into ketosis again).