The Parasite - Female to Alien transformation

This one's a little weird... what happens when aliens come to Earth and try to become the dominant species?

Enjoy :)

Do you believe in aliens? Do you fear sometime in the future, aliens will find our planet, and wish to wage war on us? Or would they be friendly and welcoming?

What if a certain alien species thought we’d serve a good purpose to them?

Whether it truly came from the sky or from the ground was unknown – but the fact that it was an undiscovered, parasite species was fact. It was alone, and needed to procreate for its species to survive. This was the parasite’s prime objective from the moment it emerged.

It seemed to only possess a mouth, or some other orifice. Its body was smooth, but not scaly – more resembling a worm as thick as a forearm than anything else.

It slithered around over the floor, wet and slimy, searching for a suitable host – a human woman would be the first host to fall victim, before they would discover the usefulness of men.

Alicia was the first girl to fall victim – the patient zero – that would help spread this parasite’s plague.

It was the middle of the night when the creature found its way inside of her apartment through the ventilation shafts – Alicia, being fast asleep, didn’t notice.

It slithered down the wall to the floor, seemingly attracted by Alicia’s scent – it had no eyes to discern where it had to go otherwise.

Beneath the thin blanket that covered her, Alicia was wearing nothing but panties – that night was particularly hot and humid, and Alicia had struggled to fall asleep wearing pyjamas. The duvet and said pyjama’s laid next to her bed, thrown off in exasperation.

This would make the parasite’s objective all the easier to complete.

It slithered through the dark room, going entirely unnoticed. Perhaps it would’ve been easier to enter through the window that was left wide open in a desperate attempt to cool Alicia’s hot, humid apartment. But it mattered not – the parasite was in range of its target.

It slithered around one of the bed’s legs, ducking underneath the blanket as it reached the mattress. Within moments, it would make contact with Alicia.

She was sleeping in the best position possible for the parasite; starfish, legs spread open wide. The parasite slid in between her legs without touching her, so it would not wake her prematurely and allow her to swat it away.

The panties were a no issue squeeze past, either – the parasite’s orifice opened, revealing tiny tendrils it could use to latch on to Alicia’s labia, parting them far enough to squeeze its way inside.

Alicia moaned as the metre-long creature began making its way inside of her. She stirred, opening her eyes as she realised someone was touching her.

“…What?” she moaned groggily, as the sensation inside of her vagina continued. It was as if the most lubed-up penis she’d ever encountered was inside of her, but it wasn’t thrusting back and forth. It seemed to be moving further up.

As the parasite began to push apart the small opening at the end of her cervix, the pleasure turned to pain, and with a pained yelp, Alicia reached for the light on her nightstand as she kicked her blanket off.

The light revealed a thick, slimy creature that stuck out of her vagina, already halfway inside. Alicia screamed as her belly moved – she could see the creature making its way from her vagina up to her uterus.

“N-no!” she shouted. “Stop!”

She grabbed the parasite, but it was too slimy for her to get any grip. She pulled it out a little, only for it to slide back further.

“S…stop!” she continued, not sure whether this was pleasurable or painful. Within moments, the tail end of the creature vanished, as it had made its way completely inside her.

She felt the creature stirring around, her belly somewhat expanded as the creature curled up inside her uterus. What she couldn’t see was the creature curling up, filling up all the space as best as it could, before opening its mouth at the end of the uterus’s opening. It latched on to the tissue, firmly securing itself in place – its tendrils reaching for Alicia’s ovaries, ready to pull eggs from them like apples from a tree.

The creature’s body inflated, until it was shaped precisely like Alicia’s uterus – the excess body parts quickly dissolved. Alicia would be absorbing the dissolved parts into her blood, bonding the two together permanently.

Alicia stared at her belly in disbelief – it had returned to its normal shape and size. What had just happened? Had she dreamed a gigantic snake had made its way inside of her?

She laid back down, opting to go back to sleep rather than worrying about a night terror.

This was what the parasite had waited for – in the future, it would make use of Alicia’s own eggs, but it had arrived carrying several of its own, and they were beginning to grow quickly.

One seemingly burst open prematurely – a tiny, worm-like creature burst from the shell, quickly headed back out the way its mother had come. It had tendrils similar to its mother, which it used to crawl up Alicia’s body, searching for the first hole it could use to get to her brain.

The parasite could not risk its host wising up to what had happened that night – she had to become Queen of the new hive this alien creature intended to create on our planet.

With only the hormones the parasite excreted into the lining of Alicia’s uterus, it would take weeks – perhaps months – for her to become ready for this task, but with a little help from another small friend, the process would be completed by morning.

The eggs began to grow, and the little worm crawled into Alicia’s ear. From there, it found the brain, gently nestling itself on top, worming its tendrils inside. The frontal lobe was the most important part.

When Alicia woke the next morning, nothing seemed wrong at first – until she removed her blanket.

She stared in horror at her belly, not believing what she saw at first. It was even bigger than the night before, now looking like she was three months pregnant.

And if her eyes weren’t deceiving her, it was growing before her eyes.

“What…” she mumbled, cupping her stomach in her left hand – her eyes shifted from her stomach to her hand, and she let out a horrified gasp.

She had webbed fingers, and long, pointed fingernails. Where had those come from?

With her belly still growing, Alicia already found herself struggling to get up out of bed – she had to get in front of a mirror to look at herself.

The mirror hung on the door opposite of her bed, just a few metres away. She stared at herself, finding her eyes glowing purple in the dim light of dawn. What was happening?

She was going to give birth soon. She had to remove the blanket. She had to prepare.

No. What? She had to get to a doctor. As soon as possible.

She threw her blanket off of her bed, attempting to get on her knees. Her skin was changing.

She felt sweaty, to the point where she’d drenched her entire bed in it. Or was it slime? It was slime. Thick, wet liquid was oozing from her pores, covering her bed, her blanket, everything. It was slippery.

Her belly had grown even further – she had become six months pregnant in a matter of hours.

“I… I can’t…” she moaned, opting to fall back onto her bed instead. “Too… heavy…”

As the pregnancy progressed, the parasite got more control of her mind. From six to nine months in merely a minute.

She had much more to grow yet – twelve eggs, each with a parasite inside that would emerge as big as the creature that had made its way inside of Alicia the night before.

One by one, they would break out of their shells, which Alicia would absorb – and they’d make their way out of their new brood mother’s womb into the world.

By now, the bed was far too slippery for Alicia to have any hope of escaping. She tried to recall what she’d looked like when she looked into the mirror.

Her hair had grown – soft, silky, and black, where it had previously been curly and blonde. When she went to bed, her hair reached just below her shoulders – now, it was flowing around her, well beyond her own height. The entire bed was covered in it – getting wet and sticking to her skin as the slime continued to ooze from her pores.

Her skin had turned grey, as grey as the parasite that was using her as a host. Her belly had grown much more than any pregnant woman’s belly should – twice the size it should be, easily.

By now, Alicia could no longer feel the pain. The parasite made sure she didn’t.

The final stage of her transformation began – solidifying her as the Queen, the brood mother, the first of her new species.

Her legs began to grow in length, far beyond struggle at this point – her vagina repositioned herself in a place that would be easy for the parasites to exit as her legs became one from the hip upward.

Her toes merged into one, before becoming a solid, slimy extension of what soon would be the brood mother’s long tail. It would fill the entire room, thick, slimy, and several metres long.

Along with her belly, Alicia’s breasts had grown to superhuman size as well – after all, with her glowing eyes and sharp fangs, she was a human no more.

Her breasts produced no milk, for parasites were no mammals. The newly, worm-snake-human-like Parasite Queen lay sprawled out on her bed, ready to give birth to the first parasites.

As stated before, the eggs burst, one by one, and the creatures emerged from their mother’s womb.

They slithered across her, headed for the still wide-open window – far more convenient than a small vent.

There were only twelve for this first day, but Alicia would produce many more the next night. How many eggs did a human possess? Alicia, being in her early twenties, likely had more than 150.000 eggs left.

Of course, this would not be enough to overtake the world – brood mother in this case only meant that Alicia had been the first to be infected by the parasite. By tomorrow, twelve girls would suffer the same fate – and by the next, at least a hundred girls would join them.

Soon, the parasites would discover the possibilities men had to offer – not only could the parasite create a womb inside of them to help deploy their initial twelve eggs,  but they could bond with the male to excrete their DNA into the semen the humans carried.

The men would retain their human form for longer, only transforming into their parasitic form after a month, when their own eggs would begin to grow and transform them into a female parasite host, birthing new parasites daily – this process was slower, as the womb had to be recreated from scratch rather than a parasite sacrificing its own body, but even then, it was only a matter of days, as opposed to a human’s pregnancy of nine months.

Had they known in advance or had they had more time to react, the humans would fight back, of course – but as the women who were infected stopped leaving their homes as they transformed, each birthing a dozen parasites a day for years on end, numbers added on fast before the new plague became noticed. Especially considering the parasites seemed to know which particularly sexually active men to attach themselves to, allowing one man to impregnate several women before their own transformation occurred.

Within a week, a billion of people had transformed into a parasite host – and by the night of the ninth day, the parasite was the dominant species on the planet. Several of the creatures had emerged on different continents, allowing the creature to spread worldwide within days.

Humanity was lost, and the next step of evolution would soon arrive as the parasites fully merged with their hosts DNA, creating a completely new species – it would only be a matter of time before it would discover the world had more species to offer which it could transform.