Womb Invaders

"Ok class settle down." Called the buxom redhead teacher Mrs Braithwaite. Despite the unusual nature of the lesson she was about to teach, the class was still somewhat rowdy. "Look I know the news has been weird, but I highly doubt you would teach what you need to know better than I". Despite her best attempts, there was only more chatter from the class.

"Guys! I actually want to learn here." Called Anna. Anna was without a doubt one of the hottest student in the class. Though the teacher was also hot, so that doesn't explain why her plea to quiet down was heeded and not the teacher's.

"Thank you" Mrs Braithwaite called as she straightened up her collar. Her green blouse elegantly framed her curvy figure, up to and including what looked to be a pregnancy bump of around nine months. Her pubic hair was neatly trimmed and matched her fiery hair colour perfectly leaving none of the students in any doubt that this was her natural hair colour (though she never seemed the type to dye her hair anyway). She stepped forward and out of the puddle of her own pee that was at her feet and started her lesson.

"So, as you may know, around a year ago, we had strange reports of an alien species that has a strange tendency to burrow it's way into women's wombs making said women appear pregnant. You probably already knew that this had happened to me, given my pregnancy bump, lack of pants, and the puddle of urine around my feet. So, who better to teach you about this alien than someone who is already affected. Welcome to the new addition to sex education. What is this weird alien?

To start with, this alien is believed to have first appeared just over two years ago, but first signs appeared a few weeks later in the form of women who were not sexually active with men getting pregnant. The first positive test for one of these alien pregnancies was Friday March the 13th 2026. The young woman in question claimed a few weeks prior to have been by aliens. And while her report was initially dismissed as just another tall tale, the alien pregnancy has since lead many researchers to try and uncover evidence for her claims. Sadly, none was found and so the origin of the alien pregnancy creature, thingy, also known as anomaly Z1B..." A snicker emerged from the classroom. "And what's so funny Ishmael?" she asked with a raised brow.

"Sorry miss it's just that Z1B kinda looks like the word zib, which means penis in Arabic." He answered

"Interesting, I guess you learn something new everyday." she replied before moving swiftly on. "Anyway. The anomaly *ahem* Z1B, otherwise known as the uterine alien or ulien, for short, is a lifeform running on carbon based chemistry with a water solvent. That's where the chemical similarities to earth life end. We have yet to determine what if any molecule in this thing acts as its DNA analogue. Despite it's different biochemistry, it is clear is can sustain itself inside humans by essentially hijacking our uteruses and absorbing nutrients from our own bodies. It is worth noting however that it doesn't require as much energy as a growing foetus and so it's effect on your appetite will be less, but not nothing.

Now for the medical effects of having such an alien. While this hasn't been out for a long time, there is no evidence that is has any long term harm to your body, and plenty of indication to the contrary. For example, it has been known to reduce the signs of ageing, improves circulation, boost mental health significantly, among other things. It can cure an prevent a bafflingly wide variety of diseases including COVID19, HIV and Cancer. It also makes the host immune to most sexually transmitted infections- though not all: it can't protect you from external infections such as pubic lice. There's also limited evidence that it can increase the IQ of its host, although it may turn out to be a statistical fluke."

Now for the other effects. Generally the hormone levels of an affected host are somewhat similar to those of a normal pregnancy. This does indeed make it impossible to get pregnant while the host is within you (though many see this as a plus). It's effects on libido are notable though, as it tends to cause a higher libido more consistently, whereas real pregnancies can have more variable effects in this regard. One effect that's absent is quite notably, morning sickness, so at least you don't have to put up with that. *Ahem* anyway, another interesting effect is that the ulien itself can actually poke a tentacle out of the hosts vagina, based on the whims of the host. It seems that there is a neural connection which makes the ulien act like an extension of the hosts body. This tentacle is also said to give the host pleasure, by rubbing it, essentially making it act as a kind of penis, though if the tentacle is inserted in another vagina, it can only cause a ulien pregnancy, not a real one, it can also cure STIs if it is inserted into anybody's anus, though it can't propagate that way. It's also worth nothing that the tentacle also can't transfer fecal bacteria, so you don't have to worry about going anus to vagina on this case. In fact, it's self cleaning anyway so you shouldn't try to wash it with soap.

I should warn you though that the ulien will do one thing against the hosts wish and that is poke holes in any clothing they wear on their bottom half, making it impossible to cover up. Though on the other hand it does increase the hosts cold tolerance. The other downside to this is that a ulien pregnancy makes it impossible to control one's bladder, as is evidenced by my puddle. Essentially, it means that you'll be dribbling urine at random times. You kind of have to be ready to randomly pee on the floor or in a chair. It is advisable to remember to take a waterproof seat cover with you at all times so that you don't ruin the seats for anyone else, though many places are now providing them. Otherwise the law has been amended to give you the right to pee in public, if you are so affected.

So to recap, this strange creature can essentially make you seem pregnant, but improve your health and wellbeing, remove most STIs and eliminate the risk of pregnancy. You can use it's tentacle as an appendage to propagate the phenomenon or cure other people's infections, but it will make you incapable of wearing clothes or controlling your bladder. You can obtain your own host by taking the appendage of another ulien vaginally. Now I think I've covered everything, any questions?" A hand went up at the back "Alyssa"

"Hey, urm I was wondering does the pregnancy last nine months as usual? and if so, does it hurt to give birth? Is there a birth?" a student asked.

"Ah yes! I totally forgot such crucial information. Thank you Alyssa." expressed Mrs Braithwaite. "Yes so a few things. First, after about two months, it depends on semen delivered vaginally to survive so if a host doesn't get inseminated for more than three days, then the creature is likely to die, at which point the host is likely to *ahem* 'give birth' to it, but it's not too painful as it comes out no thicker than a penis. This can be done at home with little risk, and the resulting ulien can be thrown straight in the household rubbish, no problem. "

Another hand shot up, this time it was Brad. After the teacher acknowledged his hand he asked. "What about lactation? does it induce lactation? If so, doesn't it seem a waste to lactate for a baby that isn't coming?"

Mrs Braithwaite then responded "Well, yes, the hosts body is likely to lactate, yes." She paused for a second before adding. "What they decide to do with the milk is their business I suppose. I should hope none of you are judgemental about it, right?"

"Yes Mrs Braithwaite" They said in unison

"Now, any more questions" she said as the drip dripping of urine could be heard emerging from her crotch. "Ah! Well I guess you can see the incontinence for yourself. Sorry, anyway, questions. No?" She scanned the room "Well, now you're all 18, and while normally sexual activity between students and teachers is frowned upon, I have been given special permission to *ahem* impregnate any students who wish it, so come see me during break if you want one. Though you are not obligated to have one if you don't want it. Otherwise I shall see you on Friday for biology if you are taking it. Actually if anyone wants to stay a bit longer, I'll show you my tentacle, for education purposes you know, but I'll do that later so that anyone who doesn't want to see can leave now."