That's an extra 2 lbs per week and that's alot. Have you really amped up your workouts? What is your goal here? Are you juicing?
Not only do you have the calories, but with the increase you will add water weight short term. If your additional cals come from protein you'll definately need alot of extra water. If they are from carbs you may retain some extra.
I hope you have put together one hell of a short term intense workout program to utilize the extra cals, or yes, a great deal will end up around your middle.