Catching Fire: Retold

We all know that during the interviews for the Quarter Quell Peeta announced Katniss' "pregnancy". What if Snow actually cancelled the Quarter Quell because of it, though? Katniss was never actually pregnant, obviously. What would happen? Would Katniss and Peeta be forced to have a child? Would the districts successfully rebel against the Capitol? (Everlark AU, set during CF)