Author's note: This is a work of fiction. All characters are fictional and 18 or older. Contains sci-fi. Not intended to be realistic. Actions described are highly not advised. Always get consent:) Do not copy or repost this story!! Enjoy.
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Five days after Larissa and I had sex she showed up on my doorstep looking three months pregnant. We had both taken experimental medicine while we made love which lead to her body permanently becoming thick and curvy. The medicine also gave me quite a dangerous penis that ended up fertilizing every single egg in her ovaries. After doing some research that means Larissa is pregnant with almost two million babies at once. This has obviously resulted in her belly growing rapidly in just a few short days.
Larissa stood there, sticking out her stomach. She was well aware of my pregnancy fetish. It appeared she intended to use it to get as much sex from me as possible. Although I was nervous about the extreme pregnancy and what our parents would do, I was also in heaven.
"God you're so beautiful Larissa!" I gasped. She continued to rub the tan gentle swell of her belly. I was transfixed on her flawless body. Her F-cup tits spilled out of her tight belly shirt. Larissa's short shorts were stretched to their limit as they attempted to cover her wide hips and titanic ass. I stared at her golden ass as it overflowed out of the bottom of her shorts. My eyes were glued to them. I didn't say a word as Larissa stepped inside and locked the door.
"I knew you wouldn't notice!" Larissa giggled. Her hands went from caressing her belly to running through her hair. "I got a haircut and I didn't die my hair," she explained. Larissa used to have long brown hair that reached the bottom of her shoulder blades now it just about reached her shoulders and was black.
"All this time your natural hair color was black?"
She laughed. "Yeah I liked brown better but if I'm gonna be super preggo I figured it's alright to let myself go." Larissa noticed me staring and added, "what do you think?"
"I love it! It compliments your sexy tan Latina skin and your dark brown eyes. You look mysterious and kinky," I confessed. She smiled and did a sexy dance while she raised up her shirt to just beneath her boobs, revealing her whole slightly swollen tummy.
"Ooo if you compliment me like that I just might pounce on you!" Larissa teased. She took a step forward before pulling off her top completely. Her shirt fell to the ground as her caramel F cup tits jiggled toward me. Finally Larissa pressed her hefty breasts against my chest as she took my hands in hers. My cock was instantly erect. It took all the strength I had to look Larissa in her eyes. I could feel her hard nipples straining through the fabric of her bra. "It's rude to leave your baby mama waiting... especially when your parents aren't home," Larissa breathed sensually.
Before I knew it we were both naked in my bed. My lips kissed hungrily at her mouth. Eventually they made their way down to Larissa's enormous tits and latched onto her nipples. "Of fuck Peter! Just fuck me! I'm pregnant with every single one of my eggs fertilized so if you think a normal pregnant woman is horny just imagine how I feel!" My stiff cock agreed. I couldn't wait anymore. I grabbed her by her thick hips and slammed my dick in her tight cunt. She let out a satisfied yell like I've never heard before. It was wild. Larissa kept grinding and rubbing every inch of her thick creamy brown body. I squeezed her fat ass as I thrust in and out of her. She moaned constantly. We were a lot louder than last time. I was hypnotized by her new body. She used to be so small and boney, now she's round and soft. I moved my hands up to her enormous tits. Larissa moaned when I touched her dark nipples while rubbing her breasts. I couldn't stop playing with them, they were huge! I never thought I'd be lucky enough to even witness a pair of tits this big yet there I was feeling them up, squeezing them, sucking them, kissing them.
"Fuck, I'm so close baby daddy!" Larissa shouted. She was never that loud before. I slid my hands down her curvy body and rested them on her waist. I loved her slightly swollen tummy. She was so thick that when laying on her back her tiny pregnant belly blended in with the rest of her body. "Mmm yes rub that baby bump you gave me Peter! I know how much it turns you on that you knocked me up. Do you want me to get on my hands and knees so you can really feel my bump?"
I was already close to cumming but Larissa's words brought me closer to the edge. She gave me a devious smile and got on her hands and knees before I could respond. "You can see my tummy bulge much better now. Come hold it while you fuck your baby mama's tight pussy!" Larissa exclaimed while shaking her plump ass. Her belly wasn't the only thing that looked better in that position. Larissa's titanic tits heaved with every breath, her huge golden ass jiggled as she moved.
My dick was ready to explode. She was much more horny than last time. Her pussy was drooling, practically begging for me. I took one of her large asscheeks in each hand as I plowed into her sweet warm cunt. The way her flesh poured out of my hands drove me wild. I started thrusting faster. Larissa's massive tits swung and flopped below, making a noise that made me even more excited. I slapped her ass as hard as I could. It was so smooth and round I couldn't help but not give it a hit. Larissa yelped and her pussy clenched my cock harder. "Put your hands on my bump!" Larissa pleaded. Something about being pregnant made her much more into her tummy than she used to be. I decided to tease her and grab her big swinging tits instead. "Oh God, oh fuck, you're making me cum!" Larissa screamed in ecstasy. I finally placed my hands around her slightly distended tummy to feel its gentle swell as I flooded her womb with cum. She gasped and panted as we came together.
After riding a long wave of bliss we laid down on the bed together, our sweaty naked bodies cuddling each other. Larissa suddenly looked shocked. Her hands rushed to her glistening, tan belly. "You didn't inflate my body with cum like last time!" Larissa observed. She was right. Last time my cock swelled up and pumped gallons of cum in her creating a pseudo pregnant belly. This time my cock did swell to absurd proportions but it made only a bit above average amount of cum.
"Maybe that was a side effect of the drug and it wasn't permanent?" I theorized. Larissa shrugged.
"Well I am pregnant with a million of your babies so I'll be getting pretty big without your giant cock pumping me full anyway," Larissa giggled causing her sexy curves to quake.
"What in the actual FUCK!" a familiar voice boomed. Panic immediately took over. Larissa instinctively shrieked and yanked the covers over us. I stared in terror at my Dad in the doorway. I didn't feel the weight and consequences of Larissa's pregnancy until that moment. Everything felt like it was crashing down... crashing down on me.