Scuttle speed, Oxytocin production, Knotting

About a week after the teenage girl had been infected, the Hylax larvae had gestated long enough to mature. When evening set in they started to absorb any fat she had gathered, which wasn’t that many and started to grow. The girl felt the rumbling in her belly and was at first worried. Earlier that day she had been so horny she fucked her nerdy boyfriend hard enough he'd ended up cumming inside her twice. The reason her womb was aching couldn’t be because that knocked her up, could it? But then she put it out of her mind, assuming she was letting herself be controlled by her fears.
Instead, she decided to go to bed early. With any luck it’ll be over next morning.

While the teen girl slept the Hylax grew bigger and bigger. In the next few hours her belly looked slightly inflated. She tossed her head in her sleep, seemingly having a nightmare.
It wasn’t long after that till her labia parted and a small green Hylax came crawling out of her young pussy. Soon after came a second, and a third …
They were soft and squishy but grew to full adulthood in less than an hour. As their carapace hardened their new features also became apparent. Their legs had become longer than those of their parent, making it easier for them to move around, scale walls or even jump further.

When the dozen or so Hylax the schoolgirl had birthed were fully matured, the biggest of them crawled back between his mother’s legs. Since she was fast asleep there was no need to **** her first. So he pushed his ovipositor into her pussy, slick and slightly stretched from the birthing just an hour or two ago. Once he pushed past her cervix, he deposited another dozen eggs inside her now experienced womb. Along with the eggs he also deposited a sticky liquid, causing the eggs to ball up and stick together.

While the teen girl was being re-inseminated, the other Hylax pulled open the window and exited their mother’s room. Spreading into the city.