In-Law XI (Patreon)

Note: This is a story-prompt for Zee(mired). It is based on a plotline submitted previously by Smidgeon.

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Jade awoke to the humming vibrations of her phone alarm going off. She yawned as she dug the device out from under her pillow, squinting at the bright interface through the darkness.

5 AM.

On Thursdays she liked to get up early for her pilates class. It felt good to get a workout in before she went shopping. Jade sat up and stretched her arms above her, trying to shake off the final remnants of sleep. She lowered her hands, and just before she could climb out of bed, something gripped her wrist. Jade threw a glance back her husband.

“Stay,” said Jack hoarsely, looking handsomely disheveled even in the dim room.

“You know I can’t skip a workout,” said Jade with a smirk as she gently tugged her hand free. “A small payment for this banging body.” She gave him a generous flash of her thigh and butt cheek as she got up, playing with the hem of her nightgown.

Jack groaned remorsefully and waved her off. Jade bounded off to the bathroom and took a shower.

By 6 o’clock, she was at pilates, lined up in the fitness room with several of her friends. The women did some stretches as they awaited the instructor’s arrival.

“Your mom still staying with you, Jade?” inquired Jade’s friend Beth, to the left of her.

“Eugh, it’s awful,” responded Jade with an eye-roll. “She and Jack are practically playing house.”

“You’re kidding?” said Stacy, her lips quirked in amusement.

“It’s sickening,” said Jade. “I can hardly stand either of them anymore.”

The door opened, another woman entering the class. Surprisingly, she was pregnant. And quite far along. Jade could not help staring at the woman as she struggled over to a spare mat.

“Seriously?” said Jade, unable to help herself. “Lady, you can barely even walk. How the hell do you expect to keep up with pilates?”

Jade’s friends giggled, while the pregnant woman looked mortified.

“Disgusting,” Jade muttered under her breath, but it wasn’t quiet enough not to bring the pregnant woman to tears. Jade knew it was cruel, but she was having a hard time controlling herself. Just seeing the prominent curve of the woman’s swollen belly in those spandex reminded her too much of her mother.

“Behave, Jade,” Beth chastised as their other friends continued to giggle.

Jade just ignored her, instead grabbing her canvas bag to retrieve her water bottle. She had failed to realize that it was actually Jack’s bag which she had grabbed that morning on her way out of the house. Jade distractedly stuck her hand into it, feeling around for her water. In the process, she unwittingly knocked the cover off a syringe, then yelped as something pinched her hand. She quickly retracted the limb to find a small puncture on her palm. “What the hell,” Jade muttered as she finally looked down into the bag. “‘the fuck? Is this Jack’s stuff?”

“Everything okay, girl?” Stacy asked. She was fully bent over, ass up as she stretched out her hamstrings.

“Yeah, I…” Jade trailed off, starting to sweat. Her body felt weirdly hot.

Little did she know, she had just been exposed to an experimental prenatal drug. It was highly active and effective, designed to increase viability, weight, and development of embryos, even causing splitting in the most early stages, resulting in multiples.

Jade folded her arms over her abdomen as her stomach lurched and gurgled. She swayed a little, pressure building inside of her. Her clothing became damp with sweat, her face flushing red.

“…Jade?” Stacy straightened.

“Guhhhh…” Jade moaned as her belly tightened. She felt the skin changing in shape, and stared down in shock at the sight of her tight tank top pushing out in a convex.

Her hands trembled as she cupped it. Her insides gurgled again, then the pressure rose to uncomfortable heights.

Jade arched, groaning as her belly inched forward. The dozen or so women closest to her had stopped stretching to stare in shock, their jaws hanging.

Jade struggled to gather her bearings. “What’s — happening!?” she choked out, but then the pressure was back. It was never gone. It just ebbed and surged in a rhythmic cycle, Jade groaning and fidgeting as her belly shuddered each time, growing bigger and rounder, steadily inflating.

A sudden sense of nausea had Jade buckling forward, covering her mouth. Somehow she staggered her way towards the bathroom, shoving past the astonished women in her path.