Chapter Text
Dennis wonders if being an alpha just turns him into a giant pervert. At least, that’s what he tells himself as he finds his thoughts drifting towards Robby’s stomach during a lull in the otherwise chaotic day. The soft curve isn’t very obvious under his layers of shirts and scrubs, but that doesn’t stop Dennis from noticing.
He’s been noticing. Ever since about a week ago when Robby made some passing comment that his old college sweatshirt felt a little tighter around the middle. Dennis had looked over from where he was brushing his teeth and nearly choked on his toothpaste, swallowing the minty taste as he glanced at the gentle curve of his love handles. Robby isn’t necessarily big, he’s just softer.
Dennis’s Google search history that night had been interesting to say the least. Multiple typos and slip ups as he typed with one hand, the other focused on rubbing Robby’s back. He had his brightness down so the glaring white screen didn’t wake Robby up because, as much as he loves talking to Robby, that was not a conversation Dennis had the sanity or patience to deal with.
how to get prgnant
how to get omega oregnant
can oldr omega get pregnant??
middle aged omega want to get pregnant
Dennis knows they could get pregnant. He’s a doctor, he’s seen plenty of medical miracles even in a career eons shorter than Robby’s. He just never considers the idea that this is something he’s into outside of sex and ruts.
He briefly questions the thought that maybe it’s just a feeding kink and, for various reasons, that just feels worse to admit and doesn’t really seem to be the case. He likes feeding Robby, but to Dennis’s knowledge it doesn’t get him off. Robby is Dennis’s first and only mate- any new kinks he feels with Robby are the first ones Dennis experiences at all. He has no real knowledge on fascinations or fetishes.
So he enlists Trinity's help. And then he promptly regrets it when she laughs her ass off at him in the secluded booth of the crowded bar they’re in.
“Goddamn, Huckleberry, you’re a little freak, huh?” She wheezes into her drink. She makes sure to set it on the table so she doesn’t spill it everywhere, eyes filled with amusement. Dennis glares at her, but it’s probably more a humiliated pout.
“It’s not freaky!” Dennis groans, muffling his voice as he hides his face into his arms. “I’m trying to figure out if I even like it!”
“It’s a little freaky. You wanna breed old man pussy.”
“Trinity!” Dennis sputters, ears burning as she laughs away. “Don’t laugh! I’m being serious!”
“Huckleberry, sweetie, there’s a thing called Google.”
“I tried that already.”
“That BDSM test?”
“I’m already confused on one kink! I don’t need a website telling me about all the others I have.” He lifts his head to gauge her expression. It’s still filled with sick enjoyment and a little bit of pity. Barely.
“You’re an alpha, dude, it’s not that crazy.”
“It’s not?”
“No, breeding kinks are kind of run of the mill.”
Dennis falters, flicking the straw in his drink clockwise. His ears still burn as he asks, “does it include the stomach?”
“What?”
“Like- that kink? Being into the actual stomach? Or is that weird.”
“Uhhhh,” Trinity pauses, genuinely thinking about it. “That’s probably just a pregnancy kink.”
“What’s the difference?”
“Jesus, Huckleberry, did they have sex ed in Nebraska?”
At Dennis’s deepening pout, Trinity shakes her head. “It’s like- the breeding kink is you getting them pregnant. The pregnancy kink would be their body while pregnant. If that’s what you’re into.”
Dennis leaves the bar with a humiliating conclusion. It’s both.
He can’t help but look at Robby and wonder what he’d be like pregnant. Would he be whiny and needy? Would he want Dennis’s help or would he be his usual hyper independent self?
Those thoughts usually devolve into disgustingly horny thoughts. Well, not necessarily horny, but the images Dennis conjures up in his depraved brain might as well be from a porno. How would Robby carry the weight? Would his chest fill out more too? Would he get stretch marks? How much would the belly grow?
Robby hasn’t gained much weight, but what little he has is all because of Dennis in the first place. Making him home cooked meals or sneaking snacks into the older man’s locker. Considering Robby now eats a normal amount instead of running on fumes, it’s no wonder he’s put on some happy weight. It just is no help that Dennis wants him to put on a different kind of weight. Of the gestational variety.
Theology student Dennis would probably be gaping at him in shock right now. He’s hardly a Christian anymore and now he’s sitting at work thinking of fucking his boss pregnant. Hell, he mated his boss before even being allowed to call him by his first name. Pre med school Dennis probably would’ve died of a heart attack from his lack of control.
He’s seen Robby deliver babies before. He doesn’t initially think it does anything for him.
But one day he notices Robby holding a tiny baby in his big arms and thinks I want to get him pregnant while fully cogent and not knot deep in the older man.
Dennis is then a stuttering mess around Robby for the rest of the shift to the point it’s pretty embarrassing. Even if Robby is a little amused, fixing him with a raised eyebrow as he chuckles. Robby doesn’t seem to know. Dennis really hopes he doesn’t.
He’s very stupid to forget the number one thing Robby tells him all the time.
Robby knows everything.
It’s been about a week since Dennis’s very embarrassing realization. He wants to blame most of it on being an alpha, but, much like his possessiveness, it’s Dennis’s own odd nature.
That doesn’t mean he wants Robby to know. And so, when he innocently passes Robby his phone to type something in one night he doesn’t consider what his mate may find.
Robby flips through it for whatever he’s looking for and hums. He clicks the phone and hands it back to Dennis. Dennis thinks that’s the end of it, grabbing the remote to turn the volume back up until he hears Robby’s soft laugh behind him.
“So, you wanna get me pregnant?”
Dennis drops the remote, sending it clattering and batteries popping out as they roll under the couch. “Wh-what?” Dennis asks, eyes still locked onto the tv.
If I don’t move he won’t see me.
It’s too bad Robby is not a dinosaur from Jurassic Park. That rule means nothing.
“I didn’t mean to see your search history, I just noticed it.”
“….uh.” Dennis says dumbly, not knowing how exactly to explain himself. What’s he supposed to say? Please let me bury my face and knot into your pussy til you’re pregnant? Your stomach and stretch marks get me hard? Please crush me?
Dennis may have more confidence nowadays but even he has to admit there’s a need for tact. Mainly to avoid humiliating moments like this.
Robby’s leaning over his head now, poking at the back of his curls. “You wanna talk about it?”
Dennis swallows nervously. “Not really.”
“I’m not asking.” Robby isn’t mad, which Dennis supposes is a bit better than he thought. The smirk Robby has is a lot more dangerous though. Since they’ve become mates he’s realized Robby really is a bossy jerk.
Too bad for Dennis that he’s into it.
“Do I have to?” He whimpers.
“Yeah, kinda.”
Dennis sighs, defeated and grumpy as he scrambles for the rogue remote. He slams the pieces back together and turns off the tv, knowing there’s no way he can escape this now. Once Robby is set on something there’s no possible way to stop him. Dennis usually finds it endearing, but now he’s just humiliated as it’s being used against him. To think this is how Robby treats his alpha.
Dennis must not mind being treated this way by his omega. As a silly little thing he likes to entertain. That’s probably why he takes barely any coaxing before Robby drags him to their bedroom. He’s nervously toying with the sheets, looking anywhere but at the older man as he changes from his scrubs.
Rather than mock Dennis relentlessly, Robby seems more focused on debating the actual medical aspect. Wondering if it’s even possible rather than question the younger man on where this kink even came from. To be honest, Dennis probably always had it. He looks a little too hard at Robby’s abdomen for it to be normal.
“I mean- I don’t think you can actually get me pregnant. The medical suppressions of my heats and age have probably made me damaged goods there.” Robby hums as Dennis splutters, mouth already open to protest.
“You’re not damaged- I just- it’s just an idea. Some stupid kink I got in my head. You don’t have to act like you’re into it because I am.”
“I’m not saying it’s bad or anything. I just never really thought about it. I’m open to like….letting you get off on that with me. Since nothing will probably come of it.” Robby shrugs, leaning against the doorway. It’s almost like he thinks Dennis is going to book it.
Dennis doesn’t know if this is the most humiliating or arousing conversation of his life. “It just kinda pops up when I’m…knotting you. The- um- the bulge-“
“Oh,” Robby chuckles, a warm and deep sound from his chest. “You mean because my stomach? How it gets all full?”
The question has Dennis’s brain buffer, mouth going dry as he tries to nod. He thinks he does. He can’t tell if Robby is teasing him or if he’s just in doctor mode- over explaining physical things like he tends to do. At the mischievous gleam he catches in Robby’s big brown eyes, Dennis realizes it’s the former.
“You don’t have to make fun of me.” Dennis groans. Despite his complaint, the older omega has him feeling a little high off the realization Robby knows. That he knows Dennis wants to get him pregnant and, instead of waving it off as some knot head ideology, Robby is encouraging it. No judgement is apparent in his face or voice, even with the gentle prodding.
“I’m not making fun.” Robby rakes his eyes over Dennis’s skinnier frame. “I’m just curious what does it for you. Is it just the biological need? Or because it’s me?”
“B-both. Mainly the second, I- uh- I don’t think I’d be as into it if it isn’t you.” Dennis cannot believe he’s admitting this with such ease. He can’t ever hide anything from Robby.
“Well, don’t get any funny ideas and try it with anyone else in the first place.”
“I wouldn’t!”
“That one was a joke, Dennis, relax.”
Dennis doesn’t have time to argue. Robby is already pushing off the doorway, making his way to Dennis and painfully shirtless. “Come on- strip.”
“Huh?” Dennis breathes. He thinks. He might not be breathing at all.
“How am I supposed to let you breed me if you have your pants on?”
Dennis’s brain is melting out of his ears. “Well-“ whatever he wants to say dies halfway on his tongue. Maybe he’s using too much brain power to not pop a knot here and now.
“I want you to take your clothes off please and thank you.” Robby laughs. “Or do you need my help with that?”
When Dennis can’t seem to find any words, Robby clicks his tongue. “Guess you need my help then.”
Robby stripping is a dangerous thing. Robby stripping Dennis is an attempt on his life.
“This would be a lot easier if you stopped gaping at me and lifted your arms.” It’s an obvious command, one that Dennis obeys immediately. The shirt is tugged off and unceremoniously tossed behind Robby for them to find the next morning.
“See? You can listen. Think you can take your pants off for me?”
His pants and boxers come off in record speed, ears burning red hot. “What happened to you being the shy one during sex?”
“I’m not shy. You just kept jumping me, I didn’t exactly have time to seduce you.” Robby is already making himself at home straddling Dennis. It’s a sight Dennis doesn’t think he’ll ever get tired of. The man already towers over him normally, their height difference is over half a foot. It’s very obvious when Robby corrals him between his legs.
“Technically you jumped me the first two times.” Dennis whines, already tugging at Robby’s scrub bottoms. “Take these off.”
“Don’t tell me what to do.” Robby bats away Dennis’s wandering hands. Dennis huffs as Robby does it anyway. Brat. “And you’re the one getting a hard on looking at my tummy.”
“I can’t help that you’re wearing tighter scrubs lately.”
“Excuse your ass, these are the same size. Do you want to breed me or not?”
Dennis bites back his next comment, nodding quickly.
“That’s what I thought.” Robby snarks before muttering something that sounds an awful lot like ‘kids these fucking days.’ Dennis elects to ignore it. He instead focuses his attention on the slick soaked grind of Robby finally peeling off his briefs. Without those patches, Dennis is very clearly drooling even through his swallowing. Robby has started to peel them off as soon as they get home, not bothering with hiding his scent around the younger as often.
Dennis thinks it’s better than any drug on the market. Whatever sarcasm was leftover on Robby’s mind is left unspoken, kissing Dennis firmly while kicking his boxer briefs into the vast unknown of their bedroom.
“You know,” Robby pulls away, looking Dennis up and down, “this would probably be easier if I was on my back.”
“Why?” Dennis asks, focusing more on Robby’s stomach than his face. It was hard not to.
“So it has more of a chance to take.” Robby shrugs like it’s the most obvious thing in the world, “you get in deeper that way.”
Robby says it simply. Like it’s common knowledge. The only thing Dennis knows is that Robby is killing him.
Dennis immediately flips them over, ignoring the continuing blush in his cheeks as Robby laughs at his eagerness. Usually Dennis wouldn’t fumble around this much, but maybe Robby fueling the idea that he’s fucking him pregnant lights a fire in his stomach. It’s burning hot as he presses lingering kisses along Robby’s neck and sternum. It doesn’t help that he realizes, with sickening glee, he’s the only one to fuck Robby with this intent.
The omega is very clear on it that this is just for Dennis to do. It’s this knowledge that has him sucking a kiss against Robby’s stomach, purring into the fuzzy trail of body hair dusting it. He squeezes at the love handles, trying not to moan at how soft and warm they are before Robby tugs a curl.
“Don’t grope me there.” His ears are tinged a light pink. “Just do your job as an alpha.”
Dennis frowns, affronted as he squishes harder. “I’m going to be touching your stomach all the time if you have my baby.”
“Ugh- not like that.”
“Will too.” He argues like a petulant child. “Won’t be able to keep my hands off of you.”
“You already can’t.” Robby says like the massive hypocrite he is. If anyone was touchy out of the two of them it absolutely was Robby.
“So it’s not anything you’re not used to. Do I have your permission to fuck you stupid now?” Dennis drags his fingers through Robby’s very obvious wetness. Robby’s retort fizzles into a satisfied sigh as Dennis circles his entrance, already swallowing Dennis’s pointer finger with ease.
God, Robby is always so wet. Dennis is so lucky no one locked Robby down in the past. That he’s spread open for Dennis’s own kinks and delusions. One finger quickly becomes three as Dennis scissors Robby open, stretching his fingers wide and watching with immense satisfaction as the slick drips down his thighs and leaves streaks of it on the sheets.
“Come on,” Robby grouches. He’d deny later how whiny he gets when Dennis takes too long to prep him. “You’ve seen my cunt and cock a million times just breed me.”
Dennis works like he’s on autopilot at the command. Almost like a dog that’s finally caught the ball, eager and overexcited. He’s sure he’s panting like one, the room suddenly feeling a lot warmer as his blood rushes from his head straight to his dick.
His voice cracks, high pitched and obvious as he pulls his fingers out. “Yes, omega.” While Dennis no longer believes in God, he sends a quick prayer out to someone that he won’t fuck up this chance. He licks his slick soaked fingers, tugging Robby’s right leg over his shoulder and shimmying as close as he possibly can.
Dennis runs his hand over his dick twice, coating it in Robby’s natural lubricant before sliding inside. They both groan at the intrusion, both blushing brightly at what it signifies. Even if Robby doesn’t think he can get pregnant, Dennis is going to breed him like it's his whole life’s work. Which it practically is at this point.
Robby tosses his head back against the pillows, moaning pitifully as he digs his fingers into their comforter. Being held open like this makes it impossible to arch away from Dennis. The younger alpha makes sure of this, keeping his hips flush against Robby’s core. He doesn’t think he’ll ever get used to how warm Robby is. It always renders Dennis speechless when he first grinds inside, fingers tightening around Robby’s leg. Once Dennis is sure he won’t ruin this chance by knotting prematurely, he starts a slow and deep rhythm. Robby’s pussy always swallows him in so easily, leaving them both panting harshly. The air in the room becomes humid and heavy between them.
It seems like that’s when Robby is struck with an idea that’s either genius or another attempt to send Dennis to an early grave. He licks his lips, leveling the younger man with an absolutely predatory look. “Can’t wait to have your pups,” he coos, equal parts seductive and fucking evil, “gonna be so good for me, yeah?”
Dennis moans as his stomach buzzes, filled with hot pleasure at Robby’s words. He holds onto Robby’s thigh like it’s a lifeline, rocking deeper until he rubs against Robby’s cervix. “I wanna-” he chokes off into a whine, shuddering against the warm walls of Robby’s cunt. “Wanna be good for you.” He’s peppering kisses against Robby’s knee, hoping his devotion gets through to the older man. If Robby’s soft, breathless chuckle means anything it’s that he thinks Dennis is doing perfect.
“Such a good alpha–ah!’ His praise is cut short as Dennis grinds against the spot that always makes Robby see stars. Dennis’s thrusts are turning snappy and frantic, growing increasingly desperate through the omega’s praise.
Please please please please please, Dennis’s brain chants on repeat. Want you pregnant wanna fill you god please-
“Den- fuck!” Robby exclaims, ears a gorgeous scarlet as he seizes up, pussy tightening around Dennis’s cock like it was trying to milk it. “Stop talking!”
Must’ve said that out loud.
The demand is a lot less believable as Robby falls apart in his arms, toes curling harshly as he shudders through the sudden orgasm. Words are a luxury Dennis can’t afford as he trembles, driving in harshly as if trying to carve into Robby’s willing body. He bites on the older man’s shaking thigh, groaning loudly as his knot snags against the entrance. His free hand bullies another weak orgasm out of the omega’s cocklet, body buzzing as Robby whimpers, painting his stomach.
Dennis blinks blearily, head rushing and knot throbbing. Robby is no better, drooling against the pillows as his body trembles. Dennis doesn’t think he’s ever came harder in his life, warm ropes decorating Robby’s insides. He coaxes Robby’s leg from his shoulder, rubbing the back of it as he leans in to kiss all over the older man. He whines weakly, shoving at Dennis’s shoulder.
“You’re a fucking freak.”
“Is that bad?” Dennis croaks out once words are a commodity he has an abundance of. Robby cracks an eye open, taking in Dennis’s haggard appearance before a sly smile takes over his face.
“No. Once we’re not tied, do you wanna try again? To make sure it takes, of course.”
Dennis’s knot throbs with severe interest against Robby’s cunt, making the older man snort. Dennis thinks he’s hit the jackpot as he nods fast and eager. “Yes. Yes, please.”
“So polite.” Robby coos, dragging Dennis down for a kiss.
Dennis hopes it takes.
The following morning both of them are grateful they have a rare mutual day off. The bedroom looks like someone dropped a bomb in it, clothes scattered and the nest completely torn apart. Their en suite bathroom is likewise destroyed. Robby had insisted on showering and Dennis happily joined him only for them to decide neither of them actually had much of an interest in cleaning themselves in the first place.
Now, Robby is glaring at the heating pad like it’s personally offended him. And maybe it has. “Stupid fucking thing,” he sucks his teeth as he adjusts it to press closer to the small of his back. Dennis smiles sheepishly when he brings in breakfast, hoping Robby won’t remember it’s his fault.
With the way Robby is side eyeing him- Dennis knows that’s exactly what he’s doing.
He has his defense ready before Robby can even think. “You asked to go again- I just wanted to do what you asked.”
“Don’t play innocent farm boy with me.” Robby rolls his eyes, sitting up against their few pillows that aren’t forgotten on the floor. “Absolute heathen.”
“Is the toast and coffee an acceptable apology?”
Robby glances at the plate and mug. Apparently it is very acceptable as he takes the humble offering.
“It was your idea.” Dennis says again as he crawls into bed. Mainly to use Robby as a life size body pillow. He curls up against Robby’s side, locking his arms around Robby’s free arm.
Robby hums, feigning indifference as he drinks from the mug. “I was just encouraging your kinks like a good partner.”
“I think I nearly coded.” Dennis chuckles against Robby’s shoulder.
“Don’t do that.” Robby shakes his head. “Don’t tell the rest of them but you’re my favorite resident.”
“I couldn’t tell.”
“I know, I’m good at hiding stuff. Like clearing my search history.”
Dennis groans in embarrassment, burrowing further against the omega. “You said you wouldn’t tease.” He can feel his ears and face burn against the other’s skin.
“No, I said earlier I wasn’t making fun of you. Now I am.” The food and coffee is placed on their nightstand as Robby shifts to open his arms. A clear invitation for Dennis to cuddle into the man’s arms. Despite his pouting, Dennis climbs in eagerly. He becomes Robby’s weighted blanket, sinking against his chest happily. He can also feel Robby’s warm tummy, the gentle slope pressing against Dennis’s own flat stomach. Dennis hums softly, hands already moving to rub against Robby’s abdomen.
“You sure you’re not just a chubby chaser?” Robby asks, curling his fingers around Dennis’s hair. Dennis shakes his head, burrowing further into the older man. “I just like you.”
Robby snorts fondly, shaking his head as he stretches out. “And getting me pregnant apparently.”
“Do you think I actually can?”
“Dennis- I’m old enough I’m probably going to go through menopause soon, I don’t think an actual baby is happening.” He doesn’t say it meanly, just matter of fact. Dennis isn’t deterred in the slightest, already coming up with ways he could convince Robby to try again and again. He doubts he’ll be met with much resistance anyway. Robby didn’t seem to be turned off by the idea, just resigned to the fact it probably won’t happen.
“If I were to somehow, by some kind of miracle, get you pregnant. What then?”
“Guess we’ll just find out when we get there.” Robby scratches Dennis’s head now, making the younger melt against his torso. “How about you focus on getting some sleep?”
“Mmmkay.” Dennis yawns out, suddenly aware of how tired he really is. He’s out like a light and Robby just smiles to himself. He kisses the younger’s head, stretching underneath him so he can press further against the heating pad. He spares one look to his stomach and back to Dennis.
“Don’t get any funny ideas.”
He doesn’t know if he’s talking to himself or Dennis at that point.