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English
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Published:
2026-06-27
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2,896
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1/1
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25
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Maternal Accelerant Compound

Summary:

A student is unhappy at her inability to get with her crush, and decides to take drastic measures to get noticed.

If only she did a little more research before committing...

Work Text:

“Stupid Matt, playing with my stupid feelings.” I mutter to myself as I slam the front door closed behind me, “Amy isn’t good enough to you either, she's a total BITCH!”

I toss my backpack to the floor and kick off my shoes, sniffling, and thump my way to my room. I toss myself onto my bed and sob into the pillow. I’ve had a crush on Matt all year, he’s the sweetest guy in my lectures, but he’s totally ruined everything by becoming Amy’s boyfriend! She’s gonna toss him to the side like all her other victims. Just because she’s got tits she thinks she can get any guy she wants! I could’ve saved him, but I’m way too shy to admit that I like him. I’m glad my parents aren’t back from work yet, because I’m ugly crying very loudly. I shouldn’t be this worked up over a dumb crush, especially at this age.

Eventually I calm down enough to pick myself up, wiping my face with my jumper sleeve. I peel off my clothes and put on my pajamas, just a pair of shorts and a t-shirt. I want to be as comfy as possible right now so screw everything. I blow my nose as I walk to the kitchen to make myself a hot-chocolate. Something warm and sweet is exactly what I need. After warming some milk, I stir in the powder, and watch the little brown lumps slowly dissolve into the cup. Somehow I need to get Matt to notice me, because there's no way I’m going to tell him straight up. What if he doesn’t like me back?? Then I’d be embarrassed in front of the entire class, and Amy would never let me live it down. The hot-chocolate warms me as I drink; I sigh into the steam. Then an idea strikes me, maybe Dad has something that could help me? He’s always making some crazy shit in his lab, surely he’s made, like, a love potion or something… right? I quickly finish the contents of the mug and dash to the hallway. I’m not allowed in the lab without supervision, but this is an emergency. Plus, he’ll never know. I open the door to the basement and slowly make my way down, turning on the light as I go. Tables of equipment and papers placed haphazardly clutter the room. Shelves of random crap cover the walls, and cables clumsily hooked onto the ceiling snake around the space. Dad assures me he knows where everything is, but I’ve seen him fumble around for stuff, so I know he’s lying. I tiptoe past boxes with blinking lights, and flasks with equipment monitoring the contents beeping and bubbling softly. I don’t need to be sneaky, but being in here without permission is making me nervous. I step over some boxes and reach my destination, the sample storage (which is actually just an old fridge). Everything Dad makes is kept here, so surely I’ll find something useful. I open the door, my heart beating out of my chest. The internal light flicks on, revealing rows and rows of glass vials, beakers, and jars of colourful fluids, jellies, and solids. They clink softly together as the door opens fully. My Dad may be disorganised in the lab, but at least he meticulously labels every substance. Wouldn’t want to accidentally mix something dangerous. I push up a stool to the fridge and stand on it to reach the top shelf, and begin my search. ‘Hyper Bug Repellant’, ‘Instantly Solidifying Structural Foam’, ‘Any-Metal-Solvent’, and ‘Cream of Mushroom’ are some of the things I read as I pick up the samples. Ugh, this is all useless to me. I scan some more shelves and don’t find much. ‘Mammal Attractant’ seems promising, but I think that’s used for pests, so I won’t risk it. Eventually I find a small beaker full of a pale violet fluid. Bringing the chilled glass to my face I read the paper label crookedly glued on, ‘Maternal Accelerant Compound’. Hmm. I’m not entirely sure what ‘maternal’ means, but surely it’s something to do with being mature? Maybe I could seduce him if I had big girl assets! I stare at the glistening liquid for a moment before deciding. My heartrate quickens again when I pull out the stopper of the beaker and bring it close to my face. It’s completely odourless, which is nice. A thread of self-doubt worms its way into my head, what if this is a bad idea? Fuck it. I quickly bring up my shaky hand to my mouth and tip the glass up, making sure to swallow all of the cold liquid as it pours into my mouth. I gasp when I’m finished, more out of shock of what I’ve just done than anything else. My legs are shaking in fear at what might happen to me. There’s butterflies in my stomach, but I don’t think that’s the compound, as they were there before. Nothing seems to be happening… I carefully close the door of the fridge, and dash back to the stairs, making sure to turn off the lights and close the door behind me as I run to my room. Ohshitohshitoshitohshit, I really just did that. What was I thinking??? I throw the empty beaker under my bed to hide the evidence, and spin around to look in the mirror, seeing if there’s any changes. I look exactly as I did before. Maybe it works some other way, like a behaviour or smell thing? I really should’ve looked up what ‘maternal’ meant before drinking tha–

My train of thought halts as I feel the hairs on the back of my neck stand up. Something has changed, I suddenly feel uneasy, and not in the way I was feeling before. More like… something is wrong. A hot flush washes over me, the sudden warmth making me very concerned. Is this supposed to happen? My skin tingles as what I can only describe as a pressure builds up inside my entire body. I start to breathe faster as it becomes more and more noticeable. Oh fuck, please let me be ok. I drop to my knees as my muscles start twitching randomly, little twinges rippling up my body more and more rapidly. I feel like I’m burning up as my skin gets even warmer, and suddenly way more sensitive. My pj’s are overwhelming me, so I quickly throw them off me to relieve the feeling, leaving me nude. My chest starts to really ache, and I look down. My nipples are totally erect, and kinda sore. I whimper as the ache intensifies. My boobs were never very large, in fact if I cut my hair I could probably pass as a boy I’m so flat, but I swear they look a little puffier now, especially my nipples. I just saw them grow a little bit. Holy shit… It’s… actually working?? I smile as I watch them grow little by little, ignoring the amount of heat and twitching and aches going on around my body. I can actually feel my chest getting heavier as they expand, much to my shock and delight. Amy is going to fucking flip… The smile gets wiped off my face as soon as I feel the aches spread from my chest to the rest of my body. I groan as the pressure intensifies, and I feel my body start to… expand. My hands go to my hips as I feel the fat and muscle there build up slowly, making me squishier. My thighs and belly follow suit, forming curves on my previously rectangular body. A very low bubbling sound has started to become audible as my muscles and fat redistribute and expand. My butt is now noticeably bigger, feeling more cushioned on my feet while I'm kneeling. My breasts have almost tripled in size too, each one as big as my fist, now topped with puffy areolae. I stare into the mirror, breathing heavily as the changes fill my frame. My skin looks clearer and smoother, sweat droplets rolling down my body. I feel almost lightheaded with the amount of hormones flooding my bloodstream. The gap between my thighs has disappeared, the feeling of them touching each other very strange, but also… exciting. The bubbling sound is joined by a creaking from deep within my body, a stiffness in my joints builds, making me want to lean back and click my back into place. I moan as a series of pops runs up my spine, my bones creaking as they lengthen very slightly. My hips crack loudly inside me as they widen, making me yelp. The pressure slowly subsides, leaving me panting on the floor. I’m almost scared to look in the mirror. A gasp escapes me when I behold my new body, my hands flying to my mouth. I still look like… me, but I’ve very noticeably changed. My hips are much wider for a start, prominent hip dips hold up the extra mass of my thighs, which used to be as narrow as a rod, giving me a tasteful pear shape. A small belly pooch sits on top of my once totally flat stomach. By far the biggest change though is my breasts. I slowly reach for them in awe and cup them in my hands. They overspill them slightly; they're so large. I laugh in shock as I stand up, stumbling slightly as I grow accustomed to the new weight distributions. I’m taller too! Maybe only by a few centimetres, but definitely taller. I turn in the mirrors, brushing aside my sweaty hair from my face as I admire myself. Whatever was in the vial has worked perfectly! Matt will have no choice but to ditch Amy and ask me out now!

I’m giggling to myself, feeling myself up when I hear a loud gurgle from inside my stomach. Huh, all this extra mass has probably made me very hungry, but I don’t feel hungry? The gurgle happens again, this time accompanied by a bubbling feeling in my lower abdomen. Ooookay? Maybe the transformation hasn’t fully completed, probably tying up loose ends on the inside. Without warning a fresh wave of hormones assails me, making my head spin. I drop to my knees panting as my body heats up once more. A thick droplet of lust dribbles out of my pussy, glistening under me. Almost imperceptibly a small mass begins to make itself known in my tummy. I press my hand to my sweaty stomach and feel through the new layer of fat, and sure enough, there's a lump in there now. Am I pregnant?? Under my fingers the lump grows a little larger; Oh fuck. A deep gurgle bubbles in my stomach again as the lump begins to become large enough for me to feel it without pressing in. I can actually feel it against my muscle wall now, gradually growing heavier. I start to panic, there’s no way I’m pregnant right? More excitement drips out of my pussy, betraying my mind as the increasingly vigorous bubbling continues. A noticeable lump is now visible on my belly, and I can actually see it expanding. Where is this extra mass coming from?? There’s no way it was all in that potion… right? I look around for something, anything, in my room that could help me, even as useless as that thought is, and then back down at my belly in horror. My lower abdomen is slowly but surely inflating, and I can feel the weight getting heavier. I stumble to my feet and dash for my door, almost hyperventilating. My belly churns as I desperately waddle down the hallway, still not used to my new mass distributions. I re-enter our basement and carefully go down, feeling my enlarged tits bouncing gently, and seeing my tummy gradually pushing out more as I watch my steps down the stairs. I need to find something to stop this right fucking now or… I don’t actually know what’s going to happen when it finishes on its own, or if it stops at all… oh god. As if to goad me my womb loudly gurgles again, filling rapidly as it pushes my belly out. I squeeze past equipment and reach the fridge, throwing open the door and hopping back on the stool. I grab clinking flasks at random, growing more careless as I feel the weight grow larger inside me, searching for anything to reverse this. I sob, the panic replaced with dread as I read bottle after bottle of useless shit. I can feel a noticeable strain on my abdominal muscles now as they’re stretched outwards. The viscous clear fluid is continuing to dribble out of my pussy onto the stool below, slickening the surface. I gasp and lean against the clinking shelves as a growth spurt wracks my womb, swelling me even more. Panting, I look down at my curvy body and whimper; I look so pregnant… and it’s not stopping. There’s still more of the fridge to check, so I try to lean down to see, but my bloated belly gets in the damn way. I groan as I crouch down instead, balancing precariously on my toes on the stool. I should get off it but that would take too much time. I clutch my heavy belly with one hand as I search the shelf with the other, reading labels rapidly. I can feel my belly between my thighs, gradually pressing more and more, forcing my bent legs apart. It’s getting hard to read the labels through the tears, so I wipe my eyes to clear them… and end up losing my balance. Only for a second, but in that second I shift one foot across to steady myself and end up putting it in a puddle of my own pussy juices that had accumulated on the seat of the stool. My foot skids out from under me, and I scream as I tumble backwards off the seat and onto some boxes on the ground, breaking my fall. I slide on my back onto the floor and regain my senses for a second, only for them to be overwhelmed immediately by another growth spurt, gurgling menacingly. It lasts for a few seconds, swelling me impossibly fast. I can’t help but yell as I hold my belly, feeling the skin under my hands tighten as it struggles to contain my inflating womb. I’m so overstimulated, and scared, but worst of all, I realise that this actually feels good. Lying there on the basement floor the heavy mass inside brings me to a shaking orgasm. I squeal as the hormones flood my brain, my legs tucked up to me, and squirt more of the goop straight from my cervix. I can’t think. I shiver in the afterglow, the expansion not abating at all, and attempt to sit up. Oh fuck, I’m too big. I roll onto my side, my heavy belly groaning as I struggle to get up. I push as hard as I can against the floor but I’m just way too heavy for me to lift myself up. I flop onto my back, panicking even more. I’m trapped on my back like an upturned tortoise. I cry as my taut belly swells relentlessly, towering like a mountain in my field of view. I can see shapes on the surface now, gliding around as the thing inside squirms with growing vigour. I come again, but now too weak to do anything more than hold my tight belly and shake as I clench, riding out the surge. Through the brain fog, and rushing hormones, I feel the extreme tightness of my abdominal muscles stretching to accommodate the mass, as well as the new movements inside, pushing and prodding my walls. The large spurts of goo from my pussy has pooled around my butt and coated my thighs, making them warm and slippery. My new breasts hang to either side of my engorged belly, wobbling as I shake and struggle under my own weight. It’s getting harder to breathe as my womb presses onto the bottom of my lungs. The pressure is unbearable… am I going to die?? I wail as the deep churning strains me more, struggling to grow inside me. I feel a large thud on the top of my belly, and see that my navel has popped out. This is it… My short miserable life has only just begun and now I’m going to explode all over my father’s lab. The light from the incandescent bulb glimmers in my tears as I come again, while bracing for the end… but it never comes. With a final burble the swelling tapers off, and stops. I breathe heavily and hiccup as the brain fog clears, too stunned to think at all. My belly continues to churn and shift, but doesn’t grow any larger. I tentatively place my hands on the top of my sweaty belly, feeling my size. I’m fucking massive; my skin is so tight I can see the veins inside it. A large bump pressed against my hands suddenly, and I yelp and pull away as it retreats back inside. Something, or god forbid multiple somethings, really want out. Hopefully I give birth before dad comes back, or I’m dead for real.