Work Text:
The clock struck exactly midnight when Kara opened her eyes at the sound.
"Lena, are you... crying?"
"No..." Lena turned her face into the pillow with a sob.
The muffled crying could only mean one thing. Lena was close to giving birth. Kara's hand landed on what was left of Lena's hip and slid down to her wife's huge waist.
"You're close." She said into Lena's ear. Her voice was full of excitement: "The babies are coming!"
"I know!" Came the muffled reply. Lena shivered as Kara's fingers moved gently across her hypersensitive skin, tense and excessively hot due to the final stage of pregnancy.
"You think I don't know?" Lena said between sniffles and sighs, "do you think I don't know that this is just a hormonal overload? That means it's almost time... do you think I'm that stupid?"
"Shhh. I was simply observing for my own benefit..." Kara's breath tickled Lena's neck as she spoke. Her mouth found the special spot under Lena's jawline that was both a point of stimulation and deep intimacy.
As always, the urge to bite and join in rose immediately, but Kara dismissed it just as quickly. Instead, she buried her nose in Lena's shoulder, caressing the space where her teeth would be if she had less self-control.
"I'm so... so..." Lena cried.
"Beautiful? Attractive? Desirable?" Kara muttered.
"Terrible!" A fresh wave of tears hit the pillow. Kara took this as a cue to climb on top of her omega's absurdly swollen body. She rubbed gently against Lena's belly a couple of times, then lay back, sort of leaning on the curve of Lena's growing belly. She could feel the litter they made move in the tight space of Lena's overfilled womb. As they moved, Lena grunted in a mixture of mild discomfort and pleasure.
Kara raised her face and stared at Lena. Her erection twitched between them.
"You know that's not true," she said, "quite the opposite, in fact..."
"I'm so big and swollen!" Lena moaned.
Kara circled her finger around Lena's left nipple thoughtfully. She really wanted to fuck her partner, but it required some strategy. Simply trying to do it could make Lena more upset, given her state of mind. The soft surface of Lena's skin contrasting with the firmness of her distended abdomen was driving Kara crazy. Lena's tears also aroused a strangely intense and deep-rooted desire. He gave Lena a quick lick.
"You're not big," Kara scolded, "you don't know what big is..."
She sat up abruptly and rolled Lena onto her side and back. Lena choked with surprise. In one swift movement, Kara grabbed Lena's ankles and pushed them over her ears, spreading her legs wide, rolling her onto her upper back. Lena's huge belly suddenly met her face as she was rolled backwards and held in place by her companion. She had no choice but to spread her arms to the side and grab the sheets to stabilize herself.
With her ass brazenly facing the sky, the space between her legs was open and vulnerable.
"Ah! What..."
Kara got down on her knees, pressed against Lena so that they met pelvis to pelvis. She leaned over her sullen companion with a cruel expression.
"I'll show you what's big." She growled in her deepest voice: "I'm going to put another baby in you."
"W-what? Ah!" Lena cried out helplessly as Kara bumped into the soft opening that was becoming softer and wetter by the moment.
"I'm going to fuck you with them. You'll have another pregnancy," promised Kara. "And get really big." She slid her hands up the back of Lena's thighs to spread them better.
"But I-I already-ah! Ah!" Lena gasped and squirmed helplessly, trapped under Kara and also under the weight of her own belly.
"You'll be twice the size you are now in no time!" said Kara. Her penis was oozing fluid, generously covering Lena's lower belly, her pelvis, her clitoris. Lena's body was also leaking freely now, her inner thighs becoming slippery. Her breathing quickened.
"I don't think I...Ah!" she protested: "I couldn't take it!"
"That's a shame, because it's happening." Kara growled. She shoved the large head of her penis inside Lena's pussy and then, with a selfish grunt, pushed herself forward. The sensation of entering Lena's vagina was accompanied by a slippery sound that made them both moan. Lena's flesh clenched and sucked, stretched even tighter as Kara's cock swelled inside her. Kara began to move with long, deliberate strokes, moving forward and up.
"I'm going to take you for a second heat." Kara choked: "Make you release an egg, force you to conceive another litter right now. You know I'm producing enough hormones for that!"
"Hmm! Karaaa wait..."
"No! I'm not waiting, you're MINE. You're my partner, I'll do whatever I want with you! I'm making you pregnant now. Your body knows it, there's no point in fighting it."
Lena moaned, squirmed and huffed as Kara began to move faster.
"That's for complaining!" Kara growled.
"Ah! Ah!" Lena whimpered.
"And for resisting!"
"Karaa, ah ah AHH!"
"I'm going to keep knocking you up again and again! From now on you'll have one pregnancy on top of another. You'll give birth to a litter and you'll still be big, getting bigger and bigger with dozens of my children! You are mine! You're mine!"
"Haa..." Lena rolled back a little on her shoulder blades with each thrust, getting excited with every word.
"Oh, Christ, you're making me - me - Ah! ah! ah!" she cried. She could feel her cervix getting softer and softer as it was repeatedly rubbed and hit by Kara's penis. Kara's bodily fluids were already sending Lena into a state of euphoria, quickly making the entrance to her womb swollen and pliable.
"I'm going to fuck you so hard, flood you with my seed" Kara promised "You'll have another baby growing inside you in minutes. Another five, another ten!"
Lena moaned, her whole body red, trembling.
"I'm - Ah! Ah! Ah! Oh God! I'm getting so hot!" Lena gasped. In fact, her body temperature seemed to have risen, the flow of lubricant between her legs was now a flood. She was in ecstasy as Kara held her almost upside down and fucked her.
"Kara I think I'm really in heat! Wait! Kara! Ah! Ah!" Lena's breathing was short and frantic. "Please! Hah! Please! Don't cum inside me!" Lena screamed, "Please don't put any more babies in me, I can't take it anymore! I can't stand getting any bigger!"
"You can, you will, you have no choice, buddy." Kara growled: "You'll take it, I'll make you bigger in the blink of an eye, and then bigger again."
"Ha Uh... please... uh..."
"Admit it, you love it, your body wants it, it's eager for it! You want me to mate with you, you want me to keep you pregnant and fucked, always spreading your legs, constantly showing off my babies!" Kara growled.
Lena moaned as Kara somehow managed to push her legs open even wider, pushing herself even deeper inside. She could feel Kara's knot forming, stretching her, about to bind them together
"Pull out! Pull out!" Lena shouted, but she didn't really want Kara to pull out.
"No!" Kara roared. "I'm filling you up! Admit it! You want it! Say it!"
"I...I...Ah...I..." Lena couldn't speak for sheer pleasure
"Say it!" Kara commanded.
"Oh, please! It's so good!" Lena moaned suddenly
Kara screamed loudly and shuddered as she climaxed, her semen filling Lena so excessively that it leaked around his swollen penis. It ran down Lena's thighs and up her belly in streams, then gushed out of her pussy. Lena screamed loudly, her first orgasm coming with the cocktail of hormones and seed that Kara had poured into her. Her swollen breasts gushed milk, dripping down her chest and soaking the mattress. She shuddered and began to come in waves as her body reflexively began to milk the giant cock lodged inside her body. Kara gave a low grunt of approval, her own body supplying again and again.
"Take it, take it all" she breathed.
The two of them came once again together in wordless surrender.