Author's Note

This is intended as an idea dump of sorts for my own story concepts. Please do not solicit your own ideas.

Prompt: Sequel to previous snippet. Princess Celestia and Big Mac (or Prince-Consort Macintosh if you’re the stuffy type) are happily wed. They managed to go their first few years without trying for more kids, but Celestia’s status as a fertility goddess and Mac’s desire for a bigger family can’t be denied forever. They finally have one night of passion without any inhibitors, resulting in Celestia becoming pregnant with an even greater number of children.

But Mac and Celestia aren’t about to abstain for eleven-plus months. They use contraception to try and prevent Celestia from getting any more pregnant, but not even the most powerful spells and alchemy are foolproof against a goddess of fertility, not to mention her increasingly-healthy, hyper-virile, and growing mate. Celestia becomes pregnant again and again despite their best efforts, but this just delights them even more, for not only will they now have more children (and Celestia will be pregnant for even longer) it's starting to look like nothing can contain their growing power and potency...

True Fertility Goddess

Picture by NSFWBonBon

“Mmmm...” Celestia stretched out on her luxurious bed. She made no effort to stop Mac from rolling her onto her back, nor from him straddling her best he could. His warm smile never failed to make her heart flutter, that glint in his eyes sending a shiver up her spine. He swooped down to steal a kiss before moving south to run his velvety-soft muzzle along her neck.

Celestia nickered. The hot, heavy scent of her estrus was intoxicating, even to her. She could feel Mac’s thick cock dripping onto her belly, his every touch making that fire inside her burn hotter. He was a large stallion in every way—even larger due to her power passively giving him some… enhancements, but even with him now truly living up to the nickname “Big Mac”, she was still the larger pony. She was the goddess of the sun, after all, the Eternal Mother, the Lifegiver.

For too long, those titles had been relics of the past...

Mac explored every inch of his wife’s luscious curves. Her swan-like neck, soft, white coat, her fluffy chest, her flat, toned barrel, her wide, wide foalbearing hips. She smelled like vanilla and honey—a scent burned in his mind since they’d first met years ago. She was always so healthy and warm, her soothing presence enveloping him like a blanket he never wanted to take off.

He nuzzled his way back up her body and pressed his forehead to hers, their gazes locked and ready. They’d had sex countless times since they’d first met, but there were no contraceptives this time. Celestia could feel her body responding, tingling and burning hot, and she made no effort to stop what they both wanted. That realization alone was enough to fuel the flames even more, and from there the dam broke at last, their hungry lips meeting, eager sexes joining.

There was no moaning, no yelling, no loud noises, no calling of each others’ names. Mac and Celestia were silent, for they’d taken each other’s breath away. The only sound was the faint schlick of her marehood swallowing inch after inch of his virile size. In no time at all Mac was hilted in her tight, wet softness, and when he glided out, the emptiness gnawed at Celestia so much she almost screamed—

Then Mac pushed back in, and he stole her breath again. He was rendered mute as well thanks to her blissful tunnel squeezing and rippling around him, so hot and slick it was all he could do not to go over the edge. He buried himself inside her a second time, his hips pressing gently against hers before pulling out once more. Then he thrust a third time, pushing back and forth in a slow, easy rhythm that was like an unstoppable force of nature. Celestia panted for breath as Mac made love to her, her regal face enraptured by his every effort. She buried her face in his shaggy, straw-colored mane, his sweet, earthy scent tinged with sweat and need. His great muscles were like iron, bristling and bulging with delicious strength, yet he was gentle as a feather with her, merely leaning into his thrusts until he was hilted all the way.

They went on like that for some time. Mac and Celestia savored the tender silence in their grand bedroom, keeping on when others would’ve peaked long ago. They couldn’t get enough of each other, their breaths swirling and mixing, their noses flaring and eyes shining bright. The colors of Celestia’s mane were fuller and deeper than they had been in centuries, and ponies swore she was becoming grander and more radiant by the day, enveloping all of Equestria in her blessed light. Mac was larger and stronger than any stallion in Equestria, his great power and size leaving no question whether or not he was worthy of the Sun. He could silence others with a single word, cool tempers with ease, and while he was by no means a scholar, his wisdom was far beyond his years.

Mac eventually started to go a hair faster. His hips jerked and stuttered, Celestia’s name always on his lips. His face was twisting, the pressure in his loins getting too tight to control, his burgeoning nuts swelling larger with Celestia’s magic. She pulled him into an open-mouthed kiss, their tongues meeting like they had so many times before. Their inner fires burned as one, fierce and frenetic, and at last they peaked one after the other, blooms of great warmth flowing into Celestia’s depths again and again.

She knew Mac had gotten her pregnant. She could already feel the familiar sensations, the river of light trickling and burning bright deep in her core. Her eyes rolled back as he pumped her full, his thick, hyper-potent gift flooding her depths with life. Seven was a paltry number to what he’d give her this time, and already she could hear the laughter of colts and fillies ringing in her ears.

A short while later, he made her a mother again.

Then a third time right after, followed by a fourth, fifth, and sixth.

The seventh and eighth happened while he was still making love to her, for her womb was now filled to the brim. Her powers of fertility were truly awakening now, and when he came inside her once more, the total rose to thirteen.

Celestia’s and Mac’s hearts were singing. They held nothing back, their sweaty bodies entwined and eager as ever. Their lovemaking was always gentle, but that just made the peaks more intense… a fact that was proven when Mac’s final climax resulted in seven more sons and daughters. His stamina gave out after that, but he still remained inside while nestled in her embrace, his seed sealed so well that after they went to sleep, another five were added to the count.

And it was just the beginning...

***

Two Months Later-

Celestia pranced down an empty castle hallway, her musical laughter echoing off the ancient stone and glass. Mac chased after her with a wide grin, always hot on her heels, but never quite catching her. She looked back and meeped at how close he was, but that just made her giggle all the more, putting on a burst of speed right as he made to nip her rump.

She made a hard turn right and dashed up a set of stairs leading up to the southern tower. Mac smirked and chased after her without fail, climbing until she galloped through a set of wide wooden doors. Their hooves clacked loud on weathered stone as the cool mountain air greeted them, and Mac had only a moment to take in his surroundings before he had to avoid crashing into Celestia.

They were in the southern aviary. The staff had finished cleaning and restocking, but the messenger birds hadn’t been moved back in. All was quiet and spotless in the drafty tower heights, the smell of fresh-cut straw and washed stone faint in the air.

Mac took slow steps towards Celestia. His coat and mane were windswept, but otherwise dry and clean. “All that runnin’ through half the castle, and I ain’t tired one bit. Guess you were right about about that whole ‘empowerment’ business.”

Celestia bit back a moan. That hunger in Mac’s face never failed to make her wings flutter, his greedy eyes wandering all over her. He stared especially long at the baby bump rounding her barrel, already looking like she was six months pregnant. Her eyes drifted to his barrel in turn...

“We prolly should be careful.” Mac brushed past Celestia, his grown-out tail dragging along her side. “If I’m gettin’ more… capable, I could knock ya up even more. Certainly wouldn’t want that.”

Celestia’s legs threatened to buckle. She widened her stance, her colorful tail flagging, Mac’s teasing touch brushing along her marehood. “W-We certainly don’t... We’re a-already having… h-h-having ssssoooo... manyyyyy…”

Mac had just kissed between Celestia’s shoulder blades. He ran his lips down to where her coat mixed with her feathers, where the thin, sensitive down made her squirm.

“I’m sure a quick romp ain’t gonna do nothin’,” he said. “Protection’s held up so far, right? What’re the odds I just reached a new level or somethin’, and I wind up putting another dozen foals in ya—”

Celestia glomped him into a hay pile.

***

Three Months Later-

The rumors had been abound, of course. A fertility goddess may be immune to symptoms like morning sickness, moodswings, and migraines, but the staff knew what quirks a pregnant Celestia displayed. Cravings for certain foods, an even more prominent maternal air, a drastic rise in her magic and overall power. She’d been showing all these signs and more the past months, and combined with her starting to ‘show’ in general, she and Mac had relented and made the announcement.

“Ugh.” Celestia closed the door to her and Mac’s penthouse. She shucked off her regalia and put a hoof on her gravid belly, packed and teeming with life, its burgeoning shape a constant comfort despite it all. Most hadn’t understood when she said she was twelve weeks along with quadragintaplets, so in the press conferences following, she’d been saying the number, instead.

“Three weeks later, and they’re all still asking the same questions.” Celestia ran a hoof down her face. “Yes, my little ponies, I’m pregnant with forty foals. Goddess of Fertility, remember?”

She typically had to repeat it three or four times during a conference. The shock was expected, but the issue was the attendees kept getting distracted by her immense, motherly paunch. Already at twelve weeks, her pear-shaped barrel was so large it brushed past her knees, bulging eight inches out from her frame on each side. She swelled larger and larger every day to her and Mac’s delight, and not only was she thriving, she could feel other changes setting in, as well. Her joints were relaxing, her teats were filling out nice and full, her thighs were piling on muscle and healthy fat, and her snow-white coat was so bright it was almost blinding. Her calm, patient poise drew ponies to her like moths to a flame, and she was regaining a strength, stamina, and vigor she hadn’t had in centuries.

Celestia glanced around her home. Mac was nowhere to be found, but before she could think more on that, her nose was assailed by a smorgasbord of scrumptious smells. She hummed and made for the kitchen on autopilot, her measured steps holding that slow, heavy grace. Sure enough, she was greeted by a feast fit for multitudes, a slew of covered food trays stretched out before her.

She didn’t even sit down. She just started pulling off lids and dug in without pause. She didn’t take note of what she was eating, didn’t bother savoring the taste, she barely even chewed at all. She inhaled everything like a living vacuum, her grumbling, gnawing hunger spurring her on. She downed whole pitchers of apple juice, devoured platters of apple fritters, slurped up bowls of applesauce, ate loaves of apple bread with zapapple jam, snarfed down apple cobblers, glugged down apple-cinnamon cider, chomped through apple turnovers, and binged herself on apple pies. Nothing safe from her rampage, not a single apple spared. She ate everything on the table then started in on an assortment of raw apples on the counter: golden delicious, fuji, honeycrisp, gala, pendragon—

She realized Mac was watching her by the fridge.

Celestia stopped mid-bite. “Oh! There you are. This was all you, I’m assuming? Thank you so much!”

Mac didn’t reply. He was clad in an old, worn apron, his legs, chest, and neck flecked with flour and sugar. He was watching her with an odd grin and bright, hungry eyes.

“I-I, uh…” Celestia blushed. “It really hit the spot, you know. The babies… erm, r-really do love apples! Not that that’s surprising, of course... They are yours, after all.”

Mac grinned even wider. He pulled off his apron and went to her, never losing that strange look. His ruby tongue ran along his lips, his gaze glued to her beautiful face...

Celestia didn’t know why, but she wasn’t expecting him to kiss her. She almost pulled away on impulse, but he cupped her head in his hooves and leaned in farther. She relaxed with a purr and welcomed his familiar touch, her great wings spreading to around him like a cloak to press his chest to hers.

“Mmmm...” Celestia sucked on his lower lip, his shaggy fetlocks stroking her withers. “I missed you, too.”

Mac kissed her again. His hooves wandered south to stroke her thick womb—tight and firm, yet squishy with a bit of give. Its swirling, syrupy warmth never failed to make them smile, their growing family safe and sound.

Celestia whickered. She could feel how eager he was, his corded neck pulsing, his tense muscles ready to spring. “You know I love it when you cook... Even when I’m eating for forty-one, you give me all I can eat and then some.”

Mac chuckled. “I feel better knowin’ you and the kids are getting your fill. Been thinking I’mma start cooking dinner on the regular.”

Celestia nibbled on his ear. “I won’t say no to that. First the kitchens start spoiling me, and now you, too? We’re going to have such big, strong, healthy babies...”

Mac licked the crumbs off Celestia’s chin. “I been thinkin’ about ya all day. Was tempted to come and whisk ya away for lunch...”

“Oooh, you should have.” Her wings lingered and stroked Mac’s cutie marks, his rippling muscles like solid stone. “Just think, I might’ve been able to announce you’d got me even more pregnant. Now that would’ve been a fun press conference—”

She was cut off by Mac groaning and grinding on her. His strong hooves dug into her wing joints, the urge to rear roaring loud in his mind. Celestia’s tail hiked up high, and she suddenly found that spring in her core was tightening, fast. She fondled Mac’s watermelon-sized balls with magic, the hefty orbs tripled in size since they’d first conceived, so dense, fat, and productive. He was so virile it’d broken all records, and that potency was still skyrocketing, his smooth, burgeoning sack millimeters from his knees.

Celestia teleported them to the bedroom. They moved together to spoon on the bed, groping and kissing, Mac dry humping her like mad. He sucked on her neck and aligned his hips, a touch of her magic guiding him into place, Celestia murmuring his name and urging him on. His flat, spongy tip left a slick streak on her pregnant belly, and his length was snugly wedged between her swelling breasts. He’d gotten so big he needed help to fit inside her, but she was one step ahead of him, spreading her outer lips wide with more magic...

Mac stuffed his cock inside her hot, snug depths. A wonderful hiss escaped him, and Celestia echoed him just as loud, guiding him to rub her thick, supple skin. He sank into her little by little, his every thrust claiming more and lubing his path. His medial ring squeezed inside with a wet SCHLICK that made them both blush, and that was when Celestia started bearing down in time, the faintest of flutters resounding within.

Celestia’s eyes rolled back. All the stress and tension of the day faded, banished by her husband’s touch, sounds, strength, and need. Perhaps it was his enthusiasm, perhaps it was pregnancy hormones, or perhaps it was something else entirely. But regardless, by the time their hips met and he was making love to her proper, Celestia’s own inner fire was burning hot as his, her voice cracking and quivering with stilted cries.

“M-More…” Celestia traced the faint crease going up her barrel. “Mac, I w-want… more... ”

Her silky soft walls bore down on him, squeezing and rippling in an attempt to keep him inside. Mac snorted like a bull and matched her fervor, buzzing her clit every time she managed to trap him. Back and forth like that they went, sometimes Mac gaining the advantage, and sometimes her, but neither one of them giving up long, driven and desperate with desire.

Mac could feel Celestia’s heart racing. He went fast and fierce as a wolf in short spurts, his hips sinking into her cushy butt over and over. When they stopped their lips would meet again, eyes closed and tongues lazy, their noses flaring as he lay hilted in her. But then Mac’s need would overflow and he’d start up again, and Celestia would swoon like a schoolfilly, jets of sparks falling from her horn.

More. That was the word she’d said. Mac loved it when she said that, her honeyed voice dripping with desire. That yearning they shared, that empty, lonely longing… they could fill it at last. The family he’d always wanted was within his grasp now—all he had to do was reach out and take it, claim it for his own! He could feel something resonating inside him now, an itching deep inside, and when he poured all his focus into scratching it...

Mac felt a rumble deep inside. A surge of white-hot power pumped through his veins, filling him with an incredible rush of heat and light. His skin felt warm and pliable, his muscles and tissue stretching, his bones tingling with untold amounts earth pony magic. He had just enough time to flinch before an inner force began flaring in quick bursts, one after the other, again and again.

“A-Ah…” And here Mac had been thinking he couldn’t get any harder. Pleasure raced through him with every burst, pulsing each time his hips met Celestia’s plush rear. He tried to say something, to tell Celestia he’d give her all she wanted, but all that came out was a lusty grunt. The need overcame him then, and he continued to take her faster than ever, his heavy thrusts pushing him up farther and farther up her back, her pussy feeling tighter by the second—

Celestia’s eyes shot open. It wasn’t her imagination—Mac’s shaft was swelling, his size spreading and filling her even more! His growing frame was lengthening behind her, his scarlet legs encircling and creeping around her soft coat, his increasing weight sinking further into the bed! She could feel his magic building, his musky scent getting stronger, his overfilled nuts getting bigger and denser!

Her sudden peak ambushed her out of nowhere. Celestia shuddered in Mac’s embrace, flying high in a white sky of fireworks that went on forever. Soon Mac could rest his head on her shoulder while rutting her with ease, and still his herculean muscles continued to expand around her maternal form. His hot breath and soft lips rose up her neck little by little, and by the time his stuttering thrusts were at their height, she was able to feel the rivers of light flowing within her womb—

Then all she felt was heat. Powerful, syrupy, lifegiving heat, all pumped into her tunnel through a boiling rod of steel. Torrents of virile seed surged up Mac’s shaft to erupt inside Celestia, her silky depths flooded with long viscous ropes that, instead of spilling out of her, ghosted into her most sacred place to make her belly throb. She cried out Mac’s name and peaked again, her whole body shining with golden light, the familiar feeling lancing through her like it had so many times before.

“YES!” Celestia’s taut paunch shone the brightest of all. A cluster of glowing motes was already there, and there was nothing to stop all seven from merging with Mac’s seed. Seven divine bursts went off that enshrouded the other foals in stasis, Celestia’s voice cracking as the bursts spread to empower her further, making her greater in every way!

The seven new zygotes scattered like pool balls to embed in her nourishing walls. Celestia was pregnant with forty-seven now, yet her desire still burned bright as Mac’s. A second, greater cluster formed inside her, and they kissed as he gave her twelve more. A third cluster grew their family by another twenty, a fourth cluster by twenty-nine, the fifth by forty-two… the numbers kept on rising! Celestia’s ovaries were bulging, clusters pouring into her womb like waterfalls. Mac’s nuts were bottomless, his humongous, gushing cock claiming every last cell she gave. Her godly power was rising beyond measure, yet she never encountered a limit—she just kept getting stronger… and stronger...

Mac could see Celestia’s golden magic even through closed eyes. He could feel her warmth rising, her distended barrel throbbing, her echoing voice pulsing all around them. The energy in the air was palpable, and he could just imagine tiny lights coming to be, each cluster larger than the last, all waiting for him! He buried his head in Celestia’s sweaty mane and gave her everything he had, his hips pressed to hers ever-harder, resetting her pregnancy and fathering first dozens, then hundreds!

Perhaps today’s press conferences had been dull, but tomorrow’s certainly wouldn’t be...

***

One Month Later-

As of today, Celestia had been pregnant for six months.

Not six months pregnant, mind you. It was more accurate to say six months ago, she and Mac had conceived the first of their unborn children. Most had come to understand why they made that distinction, but it did give rise to new questions... such if that had any correlation to her and Mac’s recent, erm… ‘changes’.

Celestia hummed to herself while tending to a large skillet on the stove. It was a delightfully warm and clear morning, the kind where you’d expect the local parks to be quite busy. Not that she was planning on going to any parks herself, but if her schedule had been free and the right creature asked, she might very well say yes.

“That should take the edge off.” She lifted the last apple cinnamon pancake in her magic and added it to the several-dozen tall stack on the counter. She didn’t need to eat at all due to her link to the Sun, but arcano-nuclear energy didn’t do much for pregnancy cravings. She looked to Mac at the kitchen table, unsurprised to find him still jerking off to the sight of her. “Did you want anything?”

Mac licked his lips. He leaned farther back on his haunches, his enormous, glistening length now so large he could suck it himself. “Aside from you?”

Celestia chuckled. She patted her round, colossal belly, so large it touched the floor while bulging a foot and a half out from her sides. It’s soothing heat banished even the chills of old age, and her flawless skin was like a drum, her thick, fluffy coat making her seem even bigger.

“I’ve felt six new ones over the few last minutes.” Celestia lifted her shimmering tail to show that their morning lovemaking was still bearing fruit, her tight, pliable marehood still slick with his pearly seed. “Oooh, and there’s another one…”

“Mmmmmf…” Mac stroked his cock faster. His gargantuan nuts had gotten so big they overflowed his lap, their gurgling contents more plentiful and potent than ever. “Th-That lactation spell… I been watchin’ your breasts...”

Celestia smirked. She could feel that as well—the delicious, fluid pressure of her teats swelling larger by the minute. Full, perky, and soft, her breasts were already larger than her head, their supple white flesh—

Her nipples sputtered and sprayed out streams of creamy milk.

“Oops!” Celestia laughed at the splatter hitting her legs. “Seems I put little too much into the spell.”

Mac’s eyelid twitched. “Tia~”

Celestia giggled. She came over to the table with her ‘snack’ of pancakes, her awkward, waddling gait slow and gentle. She made no comment as Mac rose and approached her heart-shaped rear, his great head dipping lower and lower until he was nuzzling her hefty breasts. His barest touch made them each spray out another stream, and Mac could actually feel the milk flowing as it rushed out, the magic tingling and buzzing within.

Celestia started in on the pancakes while Mac had a snack of his own. She hummed at the feel of his smooth lips sucking, his lewd smacks and pops spaced between his long pulls. He guzzled her sweet milk while she devoured pancake after pancake, taking huge bites and hardly chewing as it all fed into her bottomless stomach.

She was still eating by the time Mac had gotten his fill. The magic was such she could feel her breasts growingeven while he’d been nursing, but whether he’d noticed or not was hard to say. She’d guessed they’d swelled another cup size between him drinking and moving on to other parts of her, so if that hadn’t been enough, perhaps she could ‘accidentally’ put more power into the spell next time...

Mac ran his cheek along his wife’s haunch and flank. Her coat was bright and shiny, her mane and tail colors so vivid they seemed to glow. He felt locked in a tiny cage he could break out of with a simple flick of his head. “H-How many… d’you th-think… you’re carryin’ right now?”

Celestia paused between bites to give him a smoldering look. “More than when we woke up, less than I will be in a few minutes.”

Mac moaned. He peppered her cutie mark in kisses before pressing his forehead to it. His strong hooves fondled her foalbearing hips, his three foot stallionhood dripping non-stop. “Y-You are… nnngh... the most… snkkttt… th-the mossssst…”

Celestia hummed. She massaged his cock with magic, pumping slow while he worshipped her motherly form. He nuzzled his way up her belly’s slope, its billowing, laden shape heralding such wonderful things and symbolizing their love. He kissed and rubbed her sensitive skin in gentle circles while whispering sweet nothings, and he could always hear the beat of Celestia’s powerful heart, resounding through her body—

The lusty fire Mac had been stoked peaked at last. But his hips met only air as he came in Celestia’s grip, his muscles locking up to fire off loads upon loads of his essence. He screwed his eyes shut and buried his face in Celestia’s side, his only sound a muffled grunt while streaks of white—

Whummmm!

Celestia caught Mac’s essence in her aura. She didn’t let any land on the floor, instead she funneled the thick strands into her marehood to ghost into her deepest place. A shudder escaped her as familiar blooms of thick warmth flowed in generous payloads, but even with such quick thinking, she wasn’t sure if—

Celestia’s form shone with blinding light. Multitudes of tiny motes leapt forth to merge with the first strand of seed alone, and an even greater amount formed to merge with the second. The motes increased a third time to meet Mac’s third gift, and it just kept on going, Celestia soon getting pregnant with thousands at a time!

“More…” Celestia’s voice thundered with the power of creation. “MORE!

And more she received. She teleported Mac on top of her with barely a thought, burying his divine cock in her wet confines even while he was still in the throes of orgasm. That’s when Mac really started to give it to her, his equally insatiable desire pushing them to conceive even greater numbers!

And so it went on, and on, and on. In fact, some say Big Mac is still getting Celestia pregnant, even to this day.