Author's Note

This is intended as an idea dump of sorts for my own story concepts. Please do not solicit your own ideas.

Prompt: Twilight, 22 weeks pregnant with a LOT of foals, is trying to monitor the various details of her progressing pregnancy. Caloric intake, weight gain, breast growth, blood pressure, heart rate, skin tissue health, etc. Spike assists her with this, dutifully recording the readings she gives him while trying not to be in the way. At one point, Twilight steps on a scale to weigh herself, but can’t actually see the reading. She asks Spike to take the reading for her while she writes down a few more things.

Contains: Anthro, Hyper Pregnancy, Bookhorse Doing Bookhorse Things.

A Day In the Life of a Hyper-Pregnant Bookhorse - Week 22

Art by ForFun41

“Did you get the reading, Spike?” said Twilight. “Read it back to me.”

Spike glanced up from the long, long parchment he’d been writing on. “Overall blood volume up six percent, oxygen capacity up eight percent. Lung capacity up five percent, heart rate remains steady. Overall summary of cardiovascular system is in line with progression of applied arcane enhancements.”

“Good!” Twilight took off the blood pressure cuff she’d been wearing. She set it beside all the other medical instruments she’d acquired from the hospital. “Looks like I’m progressing nicely.”

Spike’s eyes drifted down to Twilight’s growing belly. From his angle, her baby bump was like a baby mountain, astounding in its sheer size and girth. Her womb alone was getting to be bigger than HIM!

“Are you sure this is normal, Twilight?” His eyes widened as the underside of her womb distended faintly in the shape of a hoof. “You’re getting kinda big…”

“For this number of foals? Absolutely.” Twilight reached for a metallic device on the table beside her. She held it up to where her skin was stretched most, twitching as it touched her. “Jeez, that’s cold… hmm, let’s see here... what does that reading say, Spike? I have to hold it here to be accurate.”

Spike hadn’t even realized what Twilight was doing. She was holding the device on the right side of her belly, and with him on her left, he couldn’t see it around her expansive swell! He walked around to Twilight’s other side, squinting as he checked the reading.

“...Dermal integrity at eighty-six percent,” he read aloud. “Eighty six point five-two, to be exact.”

Twilight sucked on her teeth. “Might need another Bio-Nourish spell. Striae tend to form around eighty percent integrity. Can you hand me the Vejovis Grimoire?”

Spike went over to one of the bookshelves. “The one with the hand holding a bunch of arrows that look like lightning bolts, right?”

“Yep.”

Spike retrieved the book and held it out to her. “What else do you want to do?”

“One second.” With care, Twilight flipped through the ancient pages, muttering a string of strange words under her breath. Her skin developed a magenta sheen the color of her magic a moment before seeping into her coat. “Hehe, tingly… I want to check my weight next. I’ll need your help for that.”

Spike chuckled. “You could just stand to the side and look down to see the scale, you know.”

“I don’t trust my balance right now, Spike,” Twilight said. “I’m growing so fast that my center of gravity is shifting every day! Just because I have safety spells in place doesn’t mean I want to test them by taking a fall.”

Spike conceded the point. “Fine, fine…”

With some effort, Twilight got herself up off the chair and went into the bathroom. Upon entering, the sides of her belly brushed the doorframe, sending shivers across her sensitive skin. She didn’t have any shirts that’d fit her anymore, so she was just wearing a tank top to cover her enlarged boobs. Having shorts that fit was also a challenge, but thanks to Rarity, she at least had a pair that should last a while.

Should.

Spike followed her in the bathroom. “Wouldn’t it be easier to do this out in the main room? Even if you weren’t hugely pregnant, it’s kinda cramped in here for two.”

Twilight hesitated. “That’s… a good point, actually. Yeah, let’s do this out there. Watch out, I’m backing up.”

Spike rolled his eyes. He understood why Twilight didn’t like teleporting everywhere all the time, but sometimes, he swore she forgot she could do it at all. He moved clear of the door to let Twilight move out, the weight scale floating in her magic.

“Crying out loud…” he heard her mutter. “I almost need something to flash and beep to let ponies know I’m moving backwards…” She got free of the bathroom and turned around, her huge middle swinging around like a wrecking ball. Spike had learned pretty quickly to stay well clear when she was turning. Getting smacked once with that gravid tummy was enough for him.

“Okay.” Twilight set the scale on the floor, carefully standing on it after she heard the beep. “Take the reading, Spike. What’s the progress since last week?”

Spike took a look at the electronic display. He wrote down the number and compared it to the list of weeks previous. “Holy cow! You’ve gained eighty pounds, Twilight! You’re getting REALLY heavy!”

Twilight beamed. "Why thank you, Spike.”

“I mean, wow!” Spike double-checked everything, but the numbers didn’t lie. “Twilight, I don’t even weigh eighty pounds! You’ve gained more weight in a week than I weigh altogether! I know you’ve been inhaling food left and right, but I didn’t think you’d been gaining THIS much!”

Twilight giggled. “I’m afraid it’s not going to be stopping anytime soon.” She drummed her fingers below her boobs, feeling the firm squishy give of her womb. “I’m only a little over halfway through my second trimester, and things are only going to be speeding up from here. Pretty much everything about me’s gonna keep getting bigger.”

Spike raised an eyebrow. “How much bigger?”

Twilight looked down at herself. She recalled what the doctors had told her and the girls, the estimates of what to expect. She herself wasn’t even the ‘worst afflicted’, and even still there were talks of needing to relocate her to a larger building. Fluttershy, Applejack, Pinkie, and Rarity would definitely need to do that; the only one of them that may not to is Rainbow.

“I’m not… totally… sure, Twilight finally said.

Spike raised an eyebrow.

Twilight smiled as she stroked her belly. She could feel the warm, swirling weight within, the fertile mass teeming with life. This had definitely been an experience already, and she couldn’t help but feel a little proud. She’d seen the looks of stallions when she passed, their eyes lingering on her wide hips and ass. Her breasts were already the size of her head, and—

She felt a wetness seep through her tanktop.

“We’ll take things as they come, Spike.” With magic, Twilight summoned an odd device to her, one with pumps and tubes and a large bucket-like thing. “Looks like I need to harvest some colostrum again. Be reading to take a reading on that, too—I’ve a feeling we’re gonna need a lot of it, and I may need to use a spell to ensure my body makes more.”

Sighing, Spike went down to a lower part of the scroll, preparing to note the reading of Twilight’s breastmilk. “And let me guess, if you do that, that’s likely going to make your breasts even bigger?”

Twilight laughed. “Probably.”