The Doctor hadn't been feeling well, but of course, he wasn't going to tell Rose that. She would laugh at him, and make him stop their adventures. So he pretended he felt fine and he continued showing his Rose the wonders of the worlds. Wait, no not his Rose. She wasn't his, was she? No she wasn't. He felt his nose start to twitch and he saw Rose sitting in the captain's chair reading a book. If she saw him sneeze, she would know he was sick and then she would stop their adventures. He concentrated on not sneezing.
Rose had thought the Doctor had been acting weird. He had been sleeping a lot and he looked really pale. She glanced at the Doctor out of the corner of her eye, while she pretended to read a book. He was leaning against the console, with an extreme expression of concentration. She looked back at her book, then a loud sneeze filled the room. She jumped and then looked at the Doctor, he had a relieved and annoyed look on his face. "Doctor," Rose said, cautiously. "Are you sick?" She asked.
The Doctor rubbed the back of his head, nervously. "Um, no." He said his voice an octave higher. He cleared his throat. "Why would you ask something like that?"
"Doctor, you just sneezed. You never sneeze, you've been sleeping a lot, and you look like a ghost. You're sick." She stated, putting the book down and walking over. She brought a hand to his forehead, and them gasped, "You're burning up." She grabbed his hand, "Come on, I'm taking you to the med bay." She said, dragging him down the hallway.
"Rooooose," He whined. "I'm fine," He said, but was too tired to fight her grasp.
"No you're not," She argued. She dragged him into the med bay and pushed him down on one of the beds. She turned to the computer and her brow furrowed in confusion, as she read his sickness. "What's 'The Time Flu'?" Rose asked as she turned back to the Doctor. He gasped in shock and he turned whiter than he already was. "Doctor, what's wrong? Is it fatal?" She asked worried.
"No, it's not fatal." He said quickly. "It's just… complicated." He said.
She turned back to the screen, "Doctor, how long, have you been sick?" She said, trying to hide the worry in her voice.
"I'd say about three or four days, I think." His eyes widened. "Which means I could pass out any second, right?" He said, remembering the symptoms of the Time Flu.
"Yah, let's get you to your room." She said, grabbing his hand, and dragging him down the hallway. He directed her towards his room, with the help of the Tardis. By the time they got there, the Doctor's eyes were almost shut. He seemed to be concentrating on staying awake. She threw the door open, and he practically fell on the bed. She sighed, and asked the Tardis to move the med bay next to the bedroom. She happily obliged and Rose went to go see the rest of the symptoms. She looked intently at the screen:
The Time Flu: In the first stages of Time Flu, it looks like a regular cold, but after three or four days, patient might experience nausea, nightmares, loss of inhibitions, heat flashes, cold flashes, chronic pass outs, hallucinations, coughing and sneezing fits, extreme confusion, and inability to walk. The illness should clear up in a matter of days.
Her mouth dropped open at all the symptoms, "Oh my, I see why the Doctor was worried." She muttered. She sighed, "It's going to be a long matter of days." She joked. She laughed a bit at her joke, then she sighed deeply, "Please get better soon, Doctor." She muttered.