Seven months had passed since Rose and the Doctor stood in the control room, a sonic scanner showing them a surprising reading. After later tests, they found the child to be a boy...a boy with two heartbeats. Of course, they were filled with joy over the prospect of their son, and thankful that Rose could carry a half-Time Lord baby, but they were also quite worried for the future.
The Doctor had changed his lifestyle greatly in the past few months. There had been no running from aliens or rescuing anyone. With a time machine, they could go back and do all of that someday. Now the TARDIS was simply parked in the forest of a planet that was only inhabited by animals. The Doctor had actually checked the history and safety of the planet before bringing Rose there. Currently they were lying on the TARDIS swimming pool, the Doctor on the stairs, Rose on top of him. His hands were positioned under her protruding stomach.
"My feet are huge, my stomach is huge, obviously. And he loves kicking..." Rose shifted her body. The Doctor certainly did not mind.
"Rose, it's perfectly natural-"
Rose arched herself around to shut the Doctor's lips with a kiss.
"Oi, I'll not hear about 'natural', the baby is half Time Lord, he has two hearts!" Rose sighed and laid her head on his shoulder.
"Well," the Doctor smiled. "He is that, but he's also you. And that makes him perfect."