The Doctor looked at her "I'm fine. Just a picture in by bedroom set me off," he loved Rose so much. He was closing his eyes for a moment "I just miss her, But I know she is safer... without me, But I don't know."
He really didn't know what to do. He didn't know what would happen of he saw Rose. He didn't want to hurt her. He didn't want Jackie mad with him, he sighed and leaned back.

The Doctor was closing his eyes the rest of the way, he was trying to rest, his body was shaking. He looked really miserable. By the time they arrived he was trying to not fall asleep.
It was clear he had no energy. His fever was making him miserable.