Simon and Kim kept going, feeling reinvigorated rather than exhausted from the act to go another round. They rhythmically rutted with one another until Simon released his load and let forth Johnny's changed seed to re-fertilize his egg half.
As Simon slipped off Kim, Johnny was already well under way accelerating his growth from a fertilized egg implanting himself into Kim's uterus wall, to a zygote and then an embryo. Kim meanwhile shifted onto her side as her belly began to feel odd as it pushed out once again. As Johnny grew and stretched out as an embryo he accidentially kicked Kim, causing her to have to get up to use the bathroom. As her expanding belly grew with Johnny she began to waddle more and more until at last she arrived in the bathroom somewhere between her second and third trimester as she closed the door.
Simon had fallen into a post ejaculatory haze where he nearly would have fallen off to sleep until he heard a cry from the bathroom as the baby was obviously awake, and Kim was up tending to its needs. Groaning, but knowing it was necessary, he forced himself up, slipped his pajama bottoms on, and headed over to the bathroom. By the time he arrived, he found Kim trying to hush a fussy Johnny who was slowly growing out of his infancy for early toddlerhood.
"Kim, get some sleep," said Simon gruffly as he reached over and took the growing Johnny from her arms and laid his head upon his massive shoulder.
"Willingly. It feels like I've been handling him for years," said Kim before she departed the bathroom for her bedroom as Simon bounced and hushed Johnny in his arms. Johnny continued to grow, passing through his chubby toddler phase and into his early childhood phase by the time he'd exchanged bawling for quietly crying in his Daddy's arms--scared of a nightmare he only vaguely recalled. A nightmare he had just lived through of shrinking to nothingness.
"Feeling better?" asked Simon once Johnny's sniffles had begun to be replaced with regular breaths. Simon felt his son bob his head into his shoulder.
"Good, let's get you to bed," said Simon as he carried his son to his room and laid him down and tucked him into bed.
By the time Simon had returned to the now sleeping Kim, disappointed that Johnny's night terrors had cost him and Kim another round of carnal delights, the Chronivac was finished making Johnny, Simon and Kim's biological child.
Which meant that the next round of punishment for his parents that twelve-year-old Simon had programmed in would soon take place, with his former father now having been "put in his place", now it was time for Simon's former mother, now wife, Kim.