Remembering; It has been awhile since The Doctor saw Donna, he had hoped she still didn't remember him for her own safety but Donna has started to remember and it hasn't harmed her like he thought it would, she seems ok. But she finds the Doctor collapsed outside her house and hes not very well.
The Doctor hadn't seen Donna in awhile. He knew he couldn't as it was too dangerous for her to remember. He hoped she didn't remember as he knew it could kill her. What happened to her had felt like his fault even if she had loved so much traveling with him, he knew it had to end, But he had been lonely since the day he wiped her memory, though he still had Jack, Micky, Sarah Jane and Martha who all still remembered him and could be easily visited. But they had there own lives now, And Rose was in the parallel world with her family and the meta crisis duplicate of himself. He missed all of his friends and it was hard knowing that Donna would never remember him.
He missed Donna , she always seemed to cheer him up when things were bad, even if they had some decent arguments. He sighed and carried on walking through the street. He realized he felt dizzy and off, he knew Donna's house was near by, he probably should stay away. He coughed a few times and carried on walking.
The Doctor though didn't have time to get away from Donna's place and he fell to his knees and collapsed near by her house.
He was very pale and seemed to have a fever. He soon passed out and didn't know that anybody was going to find him.