Silly Willy . . . I hope?

I was hovering over the hot stove -- innocently stirring tomato soup -- when William comes leaping into the kitchen chanting, "You're having a baby! You're having a BABY!" I quickly turned around, slightly shocked, and asked him, "What did you say?" He repeated himself, loudly, with arms flapping in the air, "You're having a baby!" My mind quickly replayed all the movies he had seen recently, to determine where he had heard such an endearing phrase? I could not think of any, and no one we know is pregnant? It was very random. Very random.  So, my next question (I thought) would clarify his random words, I asked . . . "Where is the baby?" I thought it was a sure-fire way to prove he was just being silly -- hoping for him to point to himself, a toy, the air . . .  "Right here!" he shouted, as he placed his pointer finger on my gut. Now, I admit, I have had a little too much Halloween candy . . . but my gut is not any more visibly expanded than normal? "Right here?" I questioned, placing my hand on my tummy. "Yes! Right there!" A twinge of fear shuddered through my body . . .  ummmm . . . should I be worried??