You were in a desk, in a very familiar place, a library or sort, there are some books next to you, bigger of course but you manage to read the backs of the books, the names are very... shocking.
Interdimencional Travels: 4th Edition
Transformation Spells: Magicals and No Magicals
Pony Anatomy and YOU!: Others form of Reproductions
Size Theories and Mass Changing for new users.
These Books are related to your new condition! "this is a... interdimencional joke, right?" you chucklein the thought but it looks like that isn't a joke played by certain unicorn mare that is now APPROACHING to you! she seems to notice you with a bright smile in her face. Twilight Sparkle, student of Princess Celestia, most powerful unicorn of Equestria was now... STARING to you with bright smile... and is somewhat kinda creepy.
"It worked! the interdimencial portal worked!" she squeal like a kid with a new toy, she looked kinda cute but suddenly she new leans to you.
"Hi, My mane is Twilight Sparkle" she talks to you. You wave your hoof in motion to say hi, this was like a dream come true! you're in Equestria! yet... you're transformed in a pony, shrunken and a little scared.
"H-hi! M-my name is [your name] and miss twilight, why I am like this?" you ask to her she seem to smile in this question.
"I am doing a experiment, possibly the most important research of my life, this is very important considering that I am transformed you to help me in this since spike is in canterlot for some books that I requested"
"Why Transform me into a pony? I could be more useful back-"
"The reason why I transformed you into a pony is because the spell I casted on you is more compatible in a pony than a human" Wait, now that you think about, how she know about you and the human race, you asked twilight about this, and she smiled on you.
"I have various books and some documentals about your species, some writen by starswirl the bearded and some by others interdimencional investigators but I have to see things by myself, I must say that I'm impressed by your technology, brony." you stand back by the suddenly nickname she just called you. "brony". she chuckled with your reaction and then explain further.
"Yes, I am aware of your group that watch us in a "TV" Show for younger audience, is kinda funny." she cought a little "to clear your doubts. I find bronies... interesting, not to mentions that you all know us in a... special but somewhat inrealistic way. you all think that our world is a Utopia, without wars or conflicts but in this Equestria is quite different, there are love and tolerance like your show but also we have our fights and violence, for example: manehattan is the most dangerous place to be, gangs and bands fighting each other just for money, drugs or control over the streets" she sigh sofly in the end, she were quite amazed with this revelation, no only she know bronykind but also this equestria seems to be voilent in some aspect, in the end you find your self floating by twilight's magic, she drag you to her room, you are quite scared but she smirked, chuckling softly by your fear of height.
"Don't worry I have you, now, back to the research, I found a way to... well to make you to undertand it. to make a foal without the need or necesity of a stallion, unicorn magic or artificial insemination AND to save life of these in need." You're quite amazed with this but also flustered, this mean that she drag from your home and world for a medical solution?
"You might ask, how is this possible? easy, there are some sick ponies that are in risk to lose their life just because the bill of the hospital and the medical treatment are too high to pay. meanwhile, there are some couples that are unable to have a foal for themselves, insemination by magical means are very rare and unlikely to succeed and artificial insemination is still very new a is too costly. So I found the way to save a life AND to make a couple to have their foal, is a win situation just for its possibilities!" you are quite amazed for this, twilight might be a genius or a mad scientific but such method seems impossible just in the mere thought.
"Whoa... that's an amazing discovery, Twilight, but... what is the actual procedure, is this the reason why I am shrunken and transformed into a pony?" you ask curious of this, twilight however she blushed beneath that lavender fur, you deduced that this is a embarrassing for her to say but she answer anyway.
"The reason why you're shrunk and transformed into a pony is because this... method needs a tiny pony to... well... enter into a mare's..."
"Wait. enter in a mare? why no a stallion too, is not about to save lives?" you interrupt her, she shock her head noticing that there is more.
"Well yeah but I am not done, its needs to enter in a mare's enchanted womb, so the patient's body can experiment a series of 'changes'" what? so the sick or endangered pony enter in to mare's baby maker to... "Wow... Twilight this is... " you are speechless actually, you find this some what arousing, exciting, but she shrunk you to become a foal?
"You shrunk me to become somepony foal?" you ask completely stunned.
"well.... yeah... so... you want to go further? I promise that you will be completely fine in the entire process." She blush Embarrassed but she put her smile on you, you... agree at least but this is too much to but also could be a very interesting experience.
"... Alright, I agree to test it for you" you smiled at her. she sudednly began to jump like pinkie pie saying 'yes' all over, until she stop looking at you.
"Well since you're shrunk, and enchanted with the compatibility spell all you need is to crawl inside a mare's enchanted womb that's also means..."