KINKTOBER: DAY 26

WORD COUNT: 3K

SUMMARY: Heidi watches her husband's mistress give birth to his baby.

TAGS: fpreg, cuckquean, infidelity, orgasmic birth, sex during labor, m/f sex, nsfw, +18, tw: talks about infertility

It just fit her better. It all just fit her better.

The lingerie set that Heidi's husband had brought her for their last anniversary. Her husband. Being there, her swollen body swaying almost like hypnotic waves on top of her husband's body, wearing the lingerie set that Heidi should have been wearing.

It was all supposed to be hers, but Heidi didn't deserve it.

Of course, it fit Mistress better.

Of course, it would fit the fresh, younger body of hers better. Of course, the lingerie deserved to stretch and taut the tight skin of her swollen pregnant stomach, to force the limits of the lace stretching over Mistress' fertile, gravid body. What would be the point of Heidi wearing that on her boring body, on her flat stomach?

Heidi's hand moved there, her open palm pressed against the soft, sterile surface of her stomach. Flat.

Mistress moans grew louder, ringing in Heidi's ears, a sharp reminder. It was almost as if she had been lashed to correct her posture. Her body jolted. She straightened her posture, shoulders tensing, chin tilting up. Heidi knew her place.

She knew the rules. She knew that she had to keep her eyes on the show and her hands still. That was all she had to do, and she couldn't even do it right. 

She only had to watch. That was all she had to do tonight. To watch as her water broke on her husband's cock, her gravid body riding and bouncing on top of the man she loved as contractions rocked her body. All Heidi had to do was watch them.

Pathetic. That was one word that came to her mind. How could she be this pathetic? How could she be this desperate? No one else would have stayed after their husband proposed something like this. No one else would have stayed to see their own husband fuck another woman, to see another woman do what she couldn't do, to see his seed impregnate and fill another woman's womb.

And worse? The uncontrollable burn was taking over her body, the ache in her pussy that was making her so wet and slick just by watching them. Pathetic. That was what she was.

And still.

Heidi leaned forward. Her thighs tensed, forcing her legs to press together; the hard surface of the floor made her knees hurt. Her breath hitched when she nailed the right angle to get her closed legs to get a bit of friction against her throbbing pussy.

Mistress shifted. Heidi heard the bed —her own bed, once— complaining under their weight, she heard the groan escaping her husband's lips as Mistress' weight shifted on top of him, all of her gravid glory leaning down. Her massive stomach pressed down against him when she leaned in, closer to him, her engorged tits rubbing against her husband's chest as Mistress leaned in to kiss him.

Heidi blinked. Her eyes were glued to the floor. She probably had memorized by now every single detail and crack of her own floor because of how long she had been staring at it. All she could focus on was the sloppy, wet sounds of their bodies collapsing one against another.

Mistress' breath faltered. A small, subtle shift of her labored breath. Her shoulders squared, her body leaned forward, fingers curling around her husband's chest hair.

Her moans shifted. Subtle, terribly slow during the first minutes, but now Heidi could tell that her contractions were getting a bit too painful, a bit too close together. Of course, Heidi would notice if the only thing she was utterly aware of right now was of her and her husband's bodies, she had to notice when the moans and the grunts coming from her lips turned from pleasure to that delightful whimper.

“Oh…” Mistress moaned, slowing the rhythm of her body bouncing on top of her husband. “They’re so close together.”

Her hand moved from Heidi’s husband chest to her stomach, manicured nails slowly rubbing along the taut skin of her stomach. Then, she moved to grab her husband’s hand and press it to her own stomach. Heidi’s husband let out a small noise. Almost a feral moan of acknowledgment, the primal satisfaction of a man who knows that it is the fruits of his labor. His child. His calloused palm pressed down against the tense muscle, feeling Mistress' gravid stomach contracting beneath.

“Babe, the baby’s so low,” she moaned, her hips starting to roll again when her contraction died. “So low. I feel like he’s gonna fall out of me any minute now. We don’t have much time…”

Heidi knew that. Her husband knew that. And most important of all, Mistress knew that. Until now, Heidi had been considered a certain indulgence. They had barely turned to look at her, too focused on their own pleasure. Not like it was a surprise that Heidi was barely a leftover piece.

At first, that was part of the appeal. Having Heidi there, watching, being aware that she was there. That was what would get her husband rock hard at first. It was simple at first: her husband using her pussy to just fuck something while he watched Mistress' videos. He didn’t even allow Heidi to have his cum inside of her, always pulling out just moments before he came. Then, they crossed a line: Mistress giving him a blow job. Then another: Mistress fucking her husband in their bed.

Then, slowly, very subtly that Heidi could barely realize it before it was too late, she became an afterthought in her own life. She wasn’t even good enough as a cum dumpster for her own husband.

There was one thing she had to do, and it was to give him a child. To make his dream of being a dad come true. Of course he deserved to fuck anyone else he wanted if his own wife couldn’t give him what he needed. If the only thing she had to do, Heidi couldn't do it right. She wasn't even worth it as some fuck toy.

So when Mistress insisted on just forgetting about condoms, Heidi knew her place well enough to protest, and her husband didn’t even thought about it twice.

After all, why would he fuck a woman who couldn't even give him a child?

It wasn’t a punishment; it was what she deserved. She couldn’t satisfy her own husband. What kind of woman couldn’t satisfy her own husband? She wasn’t as young as her, as pretty as her, as fertile as her. Her body was old and somehow failed and she just couldn’t compete.

And if he thought that she deserved to kneel and watch her push out his baby, then she was going to kneel and watch.

“Mhmg…!” Mistress moaned. “Oh, oh…”

The bed squeaked. Her eyes were still on the floor, but she heard the sound of their bodies slowly stopping, the sound of skin smacking against skin becoming a soft murmur of tired bodies intertwining with each other.

She had to be so close. Heidi wasn’t sure or aware of how much time had passed, how much time she had been sitting in the corner of her own bedroom watching her husband fuck her. All she knew was that her knees hurt, her legs were starting to cramp, and she was so fucking turned on that it was starting to become hard to think about anything else but her own swollen, wet pussy and the need to cum. And she knew that it was only a matter of minutes before Mistress had to start pushing.

Heidi’s pussy throbbed. Her hips shifted without her permission in a pathetic attempt to feel something, her nails digging at her own thighs. She felt the sudden heat crawling up her body, the heavy murk fogging her brain, where the only thing she could think about was how much she wanted to have something deep inside her own pussy, something stretching her open. Heidi could feel her own nails digging into her own thighs, the heart crawling up her body, the sudden urge to touch herself. She could feel her own slickness, her own wetness dripping down her swollen pussy. She was so horny. She could barely keep herself still, trying to keep herself from reacting to the scene going on in front of her.

But she knew better. She knew better than to disobey. 

Mistress moved. Heidi heard her grunt, then a sigh as she slid off her husband. Another heavy breath before Heidi heard the bed complaining again when Mistress moved to sit on the edge of the bed, her eyes on her.

“Come here,” Mistress ordered. “Watch me birth his baby.”

Her words felt like a slap, conceit dripping off every syllable. Heidi pressed her hands to her thighs, body stiffening. She didn't have to be told twice before she crawled her way up to the edge of the bed, blinking away the tears prickling at her eyes before looking up properly for the first time in the whole night, probably. 

The first thing her eyes landed on was the gravid, huge stomach resting between her parted thighs, the fabric of the lingerie set stretching over the taut skin, stretch marks red and furious beneath the white fabric. 

The second thing her eyes drifted towards: her husband's hands, moving from behind Mistress, crawling up her stomach towards her chest, squeezing her swollen tits before they moved down to rest on top of her stomach.

Heidi's gaze faltered for a moment, holding her breath. A low moan escaped her lips when the pain of a contraction started to spread in her middle again. Heidi felt her own body tensing as she tried to keep her hips from grinding against nothing, seeing the way her stomach shifted, how the muscle contracted and tensed beneath the stretched skin.

Mistress leaned back, her back pressing against her husband's chest. It was a matter of seconds before his hands started to roam over her stomach, fingers grazing over the taut skin, trying to massage away the ache in her muscles. His hands smothered over her gravid body with a certain urgency, as if he could barely allow himself not to touch her, not to touch her tense stomach, not to claim her. Mistress took a deep breath in, eyes closing as she let her head fall back against her husband’s shoulder. Her own hand moved to rest on top of his. 

A grunt escaped her lips. Heidi's eyes traced over Mistress' face, seeing the pain taking over her features, the glistening skin shining under the low lights of the room. She tilted her head, her body pressing back against her husband as her hips moved, legs spreading open, her huge stomach falling between her parted legs.

One of her hands moved from the side of her contracting stomach to move past it, reaching between her legs to pull the lace of her panties to the side, the fabric already stretched and wet with fluids, and Heidi's eyes traced down to stare at her dilated pussy. 

Heidi's hands twitched at her sides, burning, as she tried to keep them from moving between her own legs. From sliding between her own wet, swollen folds and rubbing against her sensitive clit. She could feel her whole body pulsating, burning up. She wanted to look down, to hide her face, to stand up and walk out of the room, but she couldn't get her eyes to move away from the scene in front of her, not even when the shame and the humiliation were crawling up her skin, or even when her own mortification was begging her to. She was inches away from the woman her husband had cheated on her with, the woman she let her husband cheat on her with, the woman she watched fuck her husband like it was hers, the woman his seed had impregnated, the woman that was going to make him a father.

She was watching his mistress give birth, push out this bastard right in front of her face.

And she wanted to fucking cum.

A loud moan escaped Mistress' mouth. 

Heidi watched as her body stiffened. The muscles of her arms trembled, her hands moving to grasp the sheets, knuckles turning white. Mistress' hips jerked forward, her legs spreading open in a primal response to the pressure growing between her legs. Heidi felt her own breath hitch when she heard the low, whiny noise escaping her mouth, when she saw her moving away from her husband to let her body recoil, her face turning into a scowl as she pushed.

She was pushing. Heidi could see her stomach tightening as the contraction took over her, her husband's hand roaming over the tense surface of her gravid middle, his palms trying to soothe the burning skin.

“Ughnnn!” Mistress whimpered, a small smirk creeping up her face, “Oh, oh… I can feel him, baby.”

Mistress let her body push until the contraction passed. Heidi watched as her husband leaned in, his hands moving to stroke the sides of her distended stomach before they moved down to cradle the underside of her belly. Heidi didn’t need to look to know that his raging erection was pressing up against her lower back, his cock throbbing every time he felt a contraction coming, every time he felt her body instinctively reacting to the pain.

Like right now, Heidi could see the way her husband’s eyes sparkled as he felt another contraction taking over her. Mistress pushed, a moan escaping her lips. Heidi shifted in place.

Her knees hurt, the skin red and imprinted with the floor’s rough pattern. Her eyes prickled. She didn't want to see the scene in front of her, and still, she didn't want to blink once. One of her hands tentatively slid between her legs, cupping her wet cunt, and pressed her legs close together, hips pouncing as she started grinding against her own hand, a wave of pleasure crawling up her spine at the pressure over her sensitive clit.

Heidi’s eyes closed.

“I gotta push, I gotta push now,” Mistress moaned. “Oh— I can feel his head. It’s right there. He’s so big.”

Heidi’s eyes opened, drifting to look between her legs. Mistress' hands were forcing her own legs apart, her fingers sliding over the swollen, wet folds of her dilated pussy. Heidi could see the red, puffed surface of her cunt beginning to bulge with the baby’s head.

Heidi bit her lip, grinding against the hand between her legs, her movements becoming a bit more urgent, a bit more desperate.

She shouldn’t be touching herself. She knew that.

She saw a moment of brief panic taking over Mistress' face when the next contraction took over, her gravid stomach tensing under her husband’s hands. The baby was moving down, low and heavy in her birth canal, so low and so big. It almost felt like it was just about to fall out of her. Mistress' hips shifted, the bed complaining as she squirmed in place.

“It's alright, don't fight it.” Her husband murmured, his lips brushing her ear. “Push.”

Mistress could feel the baby's head right there, just moments before stretching her dilated pussy, a few inches from her entrance. The pressure was so uncomfortable, the urge to push she had been able to ride orgasm after orgasm was starting to become a little voice at the back of her head, hard to ignore. Mistress was sure she could be in a better position; something more comfortable, something that could help the baby come smoothly, but right now, all she cared about was that, like this, Heidi had a first row seat to watch her push this baby out.

She pushed. Her body tensed and her fingers tightened around the fabric of the sheets, her head falling back against her husband's shoulder, her face scrunching up as the baby moved lower. Heidi's body jerked, spasming with a rush of pleasure when she saw Mistress pussy bulge slightly with the girth of the head.

"Ngnhnnn....!" Mistress moaned, her thighs trembling as the contraction passed. "Ughnnnn, it's coming down. Oh, he's right there. I'm so close...!"

Heidi's legs trembled when she thrust forward, grinding her pussy against her hand, her slickness making a sticky mess, drooling down her closed thighs. Her own pulse echoed in her eardrums when she saw Mistress pussy opening around the tip of the head, a loud moan escaping her lips when her swollen folds started to part to accommodate the head of her son.

She saw Mistress' body relaxing once the contraction ended. It only lasted a few seconds before the next one was already taking over her gravid stomach. Heidi bit the inside of her cheek to keep her own moans from spilling out when the movements of her hips became faster, more frantic as she humped her hand.

Her eyes almost rolled to the back of her head when she saw her husband's hand moving past her gravid stomach, sliding between her legs, his fingers sliding between her swollen lips to feel the tip of his baby's head starting to crown. Then, his fingers moved up, starting to rub slow circles on her clit.

A strained moan tried to fight its way out of Heidi's throat. She felt her own pussy clenching around nothing as the familiar ripple of an orgasm started to build up in her trembling core.

A loud moan escaped Mistress' mouth. Her legs trembled, body tensing as she squirmed, her stomach shifting and tightening when the next wave of pain rolled over her. Then, the whimper of pain shifted into something real close to pleasure when the circles on her clit sent her eyes rolling to the back of her head.

She pushed. The pressure between her legs growing, the stretch burning as she felt the baby's head moving lower, her hole starting to open even more to accommodate the crowning head. Before she realized, her moan had turned into a loud whimper, her body trembling, fingers digging against the mattress as the head crowned between her legs, her hole stretching around the biggest part of the circumference, a gush of amniotic liquid bursting out of her.

Oh, god, she was crowning.

"Aghnnn, it's crowning!" Mistress whimpered, "Oh, baby, he's crowning! He's almost...bnghn...here!"

A drop of amniotic fluid landed on Heidi's trembling legs. She could feel the strain on her knees, the burning skin of her shins against the floor at the constant movement of her hips thrusting, humping. She was so close, and her husband was still rubbing circles on Mistress clit as the head crowned, her pussy bulging red and swollen as the baby slowly, very slowly pushed its way out.

"There's so much pressure," Mistress gasped, her hand moving to cup the baby's head, "He's almost here...!"

"Push," Heidi's husband ordered, then lifted his head, and for the first time in the night, his eyes met his wife's face. "And you, watch."

Heidi's body twitched. All she could hear was her own blood rushing in her ears and Mistress moans as another contraction started, the burn of humiliation slapping her in the face. She couldn't look away. Her eyes were locked on Mistress' crowning pussy as the head of the bastard her own husband had fucked into her made its way into the world, and she couldn't look away, and she couldn't keep her own body from betraying her and making her own pussy throb as she watched her push.

"NHgnnnn...oh, oh...uhng...!" Mistress wailed, squirming in place, her body pressing back against his, "Oh, it's coming! It's coming out!"

Heidi couldn't keep the whimper that escaped her mouth when she saw how Mistress bore down and pushed, when she saw her pussy stretching wide open as the baby's head popped out of her with another gush of amniotic fluid. She couldn't keep her hips from humping as she watched the baby's head dangling between her legs out of her wrecked pussy, staining her own bedsheets with amniotic fluid.

"Aghnnn, I—" Mistress moaned," I can feel his shoulders. Babe, nhnnh...catch him. He's gonna come. He's gonna come now."

Heidi's legs trembled when she spread them open. Her hand moved almost in automatic motion to rub furious circles on her swollen clit.

Mistress pushed. A scream escaped her lips when the shoulders started to make their way out of her. Heidi stared as her stomach shifted, the taut skin starting to deflate as the baby slowly slid out of her. One of the shoulders came out first, amniotic fluid gushed out of her. Her husband's hand was still rubbing circles on Mistress clit. The second shoulder slid out of her at the same time Heidi's body started to tremble, her hips jerking as an orgasm started to wash over her.

"It's coming! Oh, babe...!" Mistress moaned, her legs trembling as she gave one final push. "He's coming...nhgn....out!"

The baby slid out of her at the same time as both women tumbled over an orgasm, their bodies trembling —one with the pride, the euphoria of having just pushed her baby into this world clouding up her brain, the other with utter humiliation.

Heidi panted. She could feel her head spinning, her own heartbeat in her chest, as she stared at the image in front of her. Mistress and her husband, two lovebirds cradling the crying baby in their arms as he latched onto his mother’s breast.

She made a mental note to ask the laundry service about amniotic fluid stains on bedsheets.