"Ah," Jack says getting the hint. Having been pregnant himself he understand what she's going through. The same thing happened to him and he nearly ripped Ianto's head off while trying to keep the Empresses child safe. Biology can be a bitch sometimes when a child is under threat. "Got it." He moves from his hiding place and body blocks her as he tilts his head and tries to figure out where the Wild Hunt might be. His telepathic abilities aren't super strong, but that coupled with the Vortex has given him a weird sense about magic then most. "I think they are laying in wait up ahead, but I can't be sure."