The Doctor followed her out, he was sure he would be fine on his own if she wanted to go out for a few hours, his stomach didn't feel good, he moved slowly.
"Alright," He told her, his limbs were shaking. He sees Mickey and a big smile forms on his face "Ah Mickey Smith." he looked happy to see him, his smile faded as he thought of Rose though.
He was shaking as he gets in the car.

The car ride was a bit hard on him, even if he had a bag he didn't want to throw up now and feel embarrassed, He sat with his head between his hands as the car moved, he looked really pale and sick. Traveling in a car when feeling so unwell wasn't easy it seemed. He knew once he was back at the TARDIS, he would get his medicines and such.
Soon as the car stopped was when he grabbed the bag and threw up, he looked embarrassed "So... sorry." he whispered. He felt awful and couldn't stop shaking.