The Doctor was shaking, he didn't know why he was so quick to snuggle, it felt right and even if his memory was fuzzy they had been together awhile, he just rested his head on Jack's chest, He seemed to shake less with Jack's arms around him, He looked at him "Its ok, I'm sure we will figure it out, Maybe its the start of a flu or something, though unless the Master made sure something got in here whether a toxin or virus. I have no idea." He was too dizzy to think too much. "Ah," He smiled when Jack confirmed she was his sister, however, he also cried, he felt like he had failed her.