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An Urgent Checkup

Sometimes it's just nice to get away from it all. The pleasures of civilized life was great, but sometimes it was nice to leave it all behind, go camping, or just sleep out underneath a tree for the afternoon, lost in your daydreams.

Rannik was a rather large workhorse - a shire stallion, to be precise - but his job was that of a vet, helping the feral creatures of the land. He was very passionate about helping his four-legged friends, so he dedicated most of his life to serving them and ensuring that no animal went unloved. However, that also meant that he rarely got vacation time. That is why he was doing all he could to avoid the stresses of modern life by disappearing into the woods on his week off.

Contentedly lounging about underneath a massive willow treee in the middle of a densely vegetated forest, the massive bipedal equine drifted off into his thoughts, fantasizing about mares and even his stallion buddies.

After enjoying a lengthy nap in the midday warmth, he was awoken by the sounds of a particularly loud bird squawking in the trees above him.

"Mrmph! Well, that sucks." He mumbled to himself as he shifted on his back, rolling up to his hooves. Deep down inside he wanted to be mad, even frustrated at the fact that he was woken up, but part of him couldn't be mad at a bird just living its life. He mock-shook his fist at the bird, then shook his drowsiness off, his mane flowing in the speckled light of the forest. Normally his hair was tied up in bundles due to being in the medical field, but out here he could let it all hang out. All of it, hair, tail, and cock; because hey, why not?

Once he'd regained his mental faculties, a thought drifted across his mind, 'there's a hot spring nearby, maybe I could go enjoy that for a while!'

He didn't actually know where it was, but that was okay; the journey was as fun as the destination, especially for a stud like him, who was used to being used as the office's work horse, literally. He wouldn't get tired or worn out.

Through the dense forest he crept, taking note of the special looking trees, mushroom patches, and flowers to mark his travels. It didn't take him long to find the slate-lined pool of water that had columns of steam billowing up into the canopy.

Not one to waste time, he dipped his hoof into the water, feeling the warmth just enough to make sure it wasn't too hot before stepping in, one slate-formed step at a time. He was surprised how deep it was, easily able to hold his ten foot tall frame. It wasn't even that big of a pool, maybe 20 feet long, 15 feet wide, only like 6 feet deep though. It was a hot spring, not a lake.

Once settled down and relaxed, he felt himself drifting off into a state of surreal consciousness, and that's when the growth of earthy looking mushrooms began to look mighty tasty to him. They were a type of mushroom he knew to be safe, so he had no issues tossing a few in his mouth and chewing them up. They did have a bit of a funky taste to them, but he easily dismissed that as the effect of being fresh off a stump rather than the cleaned taste of market ready shrooms.

However, it quickly became evident that these mushrooms weren't as safe as they initially seemed. He found his vision to be blurry and his hands to be tingling with hypersensitivity. When he brought his hand up to his face, the feathering on his wrist seemed to swirl and explode right in front of him.

Worried for his health, he reached over to snag another mushroom, looking much closer at them to see tiny red globs of fluid dotting its rim.

Rannik grew into a panic, hopping out of the hot spring, only to lose his balance, slip, and fall headfirst onto a root, knocking him out.

---

"Uuugh, what happened?" Rannik groaned to himself as he woke, fumbling as he struggled to his feet. He licked at his lips, coughed, and licked again to taste the residual flavor of the shrooms he'd eaten before. The taste jolted his memory back to normal, but didn't do anything to help his coordination.

Stumbling through the jungle, leaning on every tree he could to not fall over. Relying on his studly stamina, he was able to make it all the way back into town, where he was quickly checked into a hospital that specialized in equine health.

---

Grumpy, out of patience, and with a splitting headache, Rannik remained in the waiting room, watching as others came and went. Growing increasingly frustrated, perhaps from the wait or the feeling of having a throbbing headache, he got up and was about to complain when the nurse, a cute female hippogryph with light brown and gold colors, came out with a clipboard.

"Rannik Valens?" She announced.

"Yeah, that's me." Rannik admitted, raising his and and lowering his gaze.

"The doctor will see you now." She slowly nodded and smiled, her warm eyes inviting the stallion into the back.

Oddly enough, his anger quickly dissipated in lieu of relief. "Alright then, thanks." He gripped his arm rests and pushed himself up, legs still a bit shaky from the lingering effects of the mushrooms. The nurse quickly darted over to grab his arm, offering him some stability.

"Careful dear, don't want you to hurt yourself!" The nurse cooed as she let Rannik lean on her.

Rannik just smiled, nodding slowly. The two shuffled together over to the doctor's examination room, where she helped him sit on the oversized examination table.

"The doctor will be back in just a moment." The hippogryph mare cooed as she bowed out of the room, backing out and returning to her desk.

"Good to hear." Rannik acknowledged, swaying his thick, muscular legs below the table. He got a good look around the room; it was a pretty basic doctor's office, with sterile steel racks, bags and boxes of medical supplies. There were powerful, bright lights hanging from the ceiling, bathing the room in artificial, white light. Nothing out of the ordinary.

Rannik only had the time to survey the layout of the room when the door swung open, an equally massive clydesdale stallion bursting through the door, wearing a lab coat that trailed behind him with a nametag that said 'doctor Vasmeth', holding a clipboard, and for some reason had a pair of goggles resting atop his head between brow and ears.

"Good evening sir Rannik." The doc shot. "Care to tell me what's wrong?" He looked down at his clipboard to see what the symptoms are, but was patiently awaiting Rannik's own words.

Rannik stood up straight, regained his composure, and answered. "Well, I was out in the woods, and while in a hot spring, I decided to snack on some local mushrooms. Far as I knew, all mushrooms in the area were safe for consumption, but this one made my vision go funny and made me pass out."

Doctor Vasmeth nodded slowly, writing what he said. "And by chance did these mushrooms have tiny little dabs of what looked like blood on them?"

Rannik's eyes lit up. "Yes, yes they did! What are they? Are they a new species? Are they a mutation? Have they been categorized? Are they a hallucinogen? They certainly seemed to make me see flavors!"

"Calm down, stud. No, they're not a new species, just usual wood mushrooms, but they've been altered thanks to a powerful alteration spell." He took in a deep sniff. "Yep, seems like you've been effected by it. When you woke, did you notice any body changes?"

Rannik examined his body. "Not really, no. I mean, my legs are relatively weak and my vision is blurry, but other than that, no."

"Have you had to relieve yourself?"

'What an odd question' Rannik thought to himself. "Uh, no, why?" he asked, hesitantly. "Should I be worried?"

Doc Vas shrugged. "Not worried, more like shocked. Can you lift your testicles for me?"

Rannik was about to do as commanded when he stopped, "Wait a second, is this some sort of prank? This is being filmed, isn't it? Where's the camera?" He was looking around to see if anyone was watching.

"No, Rannik." The Doctor assured him, resting a hand on his shoulder. "There's been some prankster out in the woods, enchanting mushrooms berries, and various other edibles, and I've had many cases like yours come in, in the past few months. So can you please calm down, lay on your back, put your legs in these stirrups, and lift your testicles for me?"

Rannik just stared. "Are you sure?"

"Positive."

Reluctant, the shire stud leaned back on the table, spreading his legs and reaching around his ball sack, lifting it up gently. As he did, he felt a cold air tickle his taint, a sensation so strong it made him clench his thighs. "Ooh! That tickles!"

Vasmeth got down onto one knee and grabbed a light from his pocket, getting a better look at the underside of the stallion's balls. He slowly nodded and poked at the puffy flesh, his finger disappearing between the velvety folds. "Yep, you've acquired a vagina."

Rannik's legs shivered in delight at the touch before the words clicked in. "Wait, what? A vagina?!" He reached around with his other hand to tickle at his slit, letting his beefy finger slip in beside Vas's, the sensation sending a chill up his spine. A feeling he was totally unprepared for. The pleasure coaxed his member to slowly unfurl from its wrinkled sheathe, but his more modest nature jerked him back to the reality of being on a doctor's examination table, and he was able to keep it from exposing itself fully.

"Yep, that's a vagina. Big puffy mare lips, I bet you could even wink up a storm with that baby. I asked if you had relieved yourself yet because there's a 50% chance that newfound orifice is where it'd come out." He continued poking and prodding at the increasingly moist vulva, prying the lips open to expose the cherry pink, velvety smoothe interior. "Yeah, looks really well formed. May I take a better look?"

Rannik bit his lips at the surprisingly overwhelming sensation of prodding digits, trying his best to control himself. He'd played with his rump before, but this was an entirely different sensation, one directly linked to the deep-seated base of his cock only a few inches away. "Yeah, go ahead. Hnngph!" he rocked his head back and took in a deep breath as he felt an involuntary muscle contraction in his groin.

Vasmeth immediately pulled his hand out from underneath the stallion's sack, flicking his fingers off. "Careful there, you just got some mess on me."

"M-mess?" Rannik stuttered, his muscles clenching a bit more.

"Yes, you winked on me; are you sure you want me opening you up to check and make sure all's well down there? Tell me, Sir Valens, would you like to keep your new genitals, or have them surgically removed?"

Rannik, with hands still wrapped around the underside of his balls, gave a gentle flick of the firm ball of flesh at the anterior crook of his lips, giggling in delight as it pursed out, getting his fingers more than a little moist. "Is...is it dangerous to keep?"

"No, as far as I can tell it's perfectly safe. It comes with its fair share of feminine complications, assuming you got the whole package. So may I take a better look to see if it's all there and proper?"

Rannik could only muster a gentle moan and nod.

"Alright then. Please maintain that position, I need to get some equipment." He took in a deep sniff of the air before leaving the room abruptly, leaving the door open for a split second, just long enough for people in the waiting room to get a look at Rannik, sitting spread-eagle on the examination table.

He casually waved, sure to keep one hand wrapped around the side of his sack, tickling at his clit, each flick making his torso tense up.

Only a few moments had passed when the Doctor swept back into the room, his hippogryph assistant in tow. "Mr. Valens, I hope you don't mind, but I have asked my assistant, Dr. Pangol to help in assessment of your mare-parts. She may not be fully equine, but the part that counts is all mare. Is that okay?"

Rannik nodde, enjoying a sideways glance at Dr Pangol, the same hippogryph female that helped him up in the first place.

"Okay, then. Melodi, can you please get up on the examination table beside Mr Valens?" He motioned for her to get up beside Rannik.

"Yes doctor." she shed her own doctor's coat, tossed it to the side, and hopped up onto the table beside Rannik, looking over at the stallion who was engrossed in his self-play. "So, I hear you've acquired the finer set of genitals. How are you liking it so far?" She leaned down to get a look between his legs.

The shire stud didn't respond, instead just giving his clit another flick, making his body - and the table it was on - a gentle shake. His cock, much to his dismay, was slowly inching its way out of his sheathe to rest on his lower belly.

"Well, that's good to hear. Trust me, it only gets better from there. Doctor Vas, you may proceed."

Vasmeth raised his lip to sniff at the air, sampling the scent of Rannik's pussy, as well as his assistant. She wasn't in heat, but her avian half almost made her body constantly give off that pleasant, sweet aroma; it was much more powerful when she WAS in heat. After realizing how silly he looked, with lip curled up, he shook himself back to a more dignified expression and quickly spun to grab at the first speculum he'd prepared specifically meant for mare examination. He grabbed at a small tin of thick lubricant and smeared it down all three of the smoothe, curved appendages before resting it up against Rannik's opening. "Okay Mr. Valens, this is going to be cold at first, but it'll be fine, I promise." He didn't wait for a response, he just pressed the three-pronged tip right against the shire stud's already-dripping lips, pushing it in through his velvety passage.

Rannik gasped and tensed up his thighs, trapping Vasmeth's hands and the rim of the speculum between his legs, but quickly realized what was happening and released. "S-sorry, I just, you're right, that's very cold and oddly enticing. Just, a bit more warning next time, please?" the speculum was buried to the hilt in his passage, but that didn't stop him from pressing his single finger up against his meaty button.

"Careful now, things are about to get tight, and if you clench down too hard, you might break the tool and pinch your flesh. So please refrain from diddling yourself." Vasmeth suggested as he began to crank on the dial that slowly spread open the speculum.

Rannik was very hesitant, but he did pull his fingers away from his slowly stretching lips. He could feel the cool air of the doctor's office tickle him deep, and that sent yet another cold shiver up his spine, putting his mane on end. "So, uh, how long will this take?" he asked, eager to bury his fingers back under his ballsack.

"Not too long, just lemme get a good look at Melodi here, then we can compare and I can give you a clean bill of health." Without hesitation, he turned and grabbed the second Speculum, lubed it up, and gently slid it up into Melodi, who gasped lightly at the cool sensation, but then nodded in approval. Doc Vas smiled and cranked the dial to open her up as well, gaping open her pink canal from vulva to cervix. Content with having both subjects open for examination, he got down onto a knee and shone a flashlight in one, then the other, comparing textures, depth, girth, cervical formation, and various others.

Once he was happy with his analysis, he stood back up and tapped his flashlight on Rannik's speculum, sending a shock up its long, metal prongs to deep within his body. "Well, Sir Valens. We have a small issue."

"I-issue?"

"Yes. Your vagina and other female parts have apparently formed quite nicely, but your vaginal walls are darker and puffier than Melodi's, and your cervix is gaped open ever so gently."

"W-what does that mean?" Rannik knew what that meant, he was a vet, after all. Regardless, his mind was fandangled and he needed to hear it from his doctor.

"It means you're in estrus already, and if you don't enjoy a powerful orgasm, I do think you could go home whimpering with need. So, I think as a doctor, it is indeed my job to not let you leave until I've diagnosed you with a clean bill of health. That said, please do relax." He slowly peeled off his white lab coat and tossed it to the side on top of Melodi's uniform, then leaned down to slowly and carefully pull the speculum out of Rannik, slowly closing the prongs and watching as the stallion's cunny walls slowly collapsed on themselves, hiding his deepest treasures one inch at a time, before it was completely out and his clit gave another wink. "You really are excitable, aren't you?" He observed, licking his finger of the mare juices that speckled his knuckles.

Rannik sighed, a little disappointed that he was no longer filled and spread, shook his head. "I'm sorry, Doctor, it's such a new sensation. Unlike anything I've felt, it's...for lack of a better word, addicting!" He leaned over his own body to be flashed by Vasmeth's quickly unfolding cock, a massive rod of limp flesh that was almost as big around as his lower leg! "Uh, you're not planning on using that on me, are you?" He whimpered. Part of him wanted it, regardless, but it looked very thick, far too thick for his virgin folds.

"Mare flesh is amazingly tangible and malleable, as I'm sure you know. Trust me, it'll be fun." Vasmeth grabbed his slowly inflating girth and pressed his tip against Rannik's slit, letting the rim of his head tickle at the underside of the shire stud's balls, coaxing an elongated gasp from the stallion.

"Oh wow, that's even nicer than fingers!" He moaned, thighs tensing up with each gentle prod.

Melodi, who was still with speculum in her own gaping open canal, leaned over to nuzzle at Rannik's chest, trailing her claws up and down his pectoral muscles to clamp down on his pre-leaking cock. It wasn't hard yet, thanks in part to Rannik's self control that at least tried to keep him from erecting his member at full mast for all to see. However, he couldn't hold it back any longer with the palm of a hippogryph cupping his bulbous glans.

"Hmmph, yes, that's nice!" he cooed as he bucked his hips up, pressing his cock against Melodi's hand. He could feel his flare bulging out a little more with each heartbeat.

Vasmeth smiled and raised his lip, sucking in as much of the estrus scent as he could, the ring on his nose curled up and flipped over as the ring on his cock poking and prodding at the underside of Rannik's clit, smearing its juices all over his own cock and the surrounding flesh. Once soaked from urethral opening to the rim of his glans, he leaned forward, plunging his member deep within his patient!

Rannik let out a long, loud gasp that Vasmeth had to muffle with his hand; his entire body tensed up, his thighs clamped down on Vas's hips, and his legs wrapped around the Clydesdale's hips, holding him in place and even pushing him in a little deeper. He could feel the girthy clydesdale's member throbbing inside him, the flare opening him up deep, pressing against his cervix and threatening to penetrate it even deeper. He clenched his cunny down and winked his cunny, balls sucking up into their pouch and cock tensing up against Melodi's gentle caress. Every inch of him was on fire, exploding with delight, but he wasn't done.

"Good, good!" Doctor Vasmeth cooed into Rannik's ear as he bucked his hips again, pulling out just enough to plunge his member back in deep, this time pushing just a little more when his cock tip pressed against the partially open entrance to the stud's womb. He fumbled with prying Rannik's legs from around his waist and pulled out almost completely, leaving his ridged cock rim resting just inside the shire stallion's entrance. His cock throbbed with every heartbeat, waiting for Rannik to wink on him before forcing himself in deep again. There was a quick, wet squelch as every inch of his girth disappeared between the slimy, slick folds of the shire stallion's slit.

He felt his flare explode deep inside, releasing a massive stream of sticky seed deep within the stud's womb, plugging him up. He let out a grunt as he bit down on his lip, leaning over his patient as he revelled in the sensation of virgin cunny convulsing and winking around his length, massaging every inch and squirting bits of fluid on its underside and the front of his oversized balls.

Melodi could tell her boss had climaxed, so she squeezed down on Rannik's massive cock, which instantly exploded in her hand, Rannik's own seed bursting through the cracks and crevices in her fingers to splash her on the beak, which she happily licked off. Content, she used the mix of seed and precum to rub gently at Rannik's entire shaft, from head to sheathe.

Rannik, however, was totally spent. His eyes rolled back in his head as his body convulsed, pussy tensing up in waves, sucking the clydesdale's seed into her depths, clit winking and spewing her own fluids all over the oversized stallion's length and lower belly.

Vasmeth pulled out, leaving a glorious mess pouring from the gaping gash between Rannik's legs, fluids smeared all up and down from his balls to rump and half down his thighs. His own cunny had let loose a gentle spurt of fluids that soaked his own backside, and Melodi's slit had leaked its own cocktail of fluids, which she happily used to rub a single finger into her rump.

"Rannik, I think that, once you are able to walk again, you're free to leave. Go find me some of those mushrooms, I'd love to distribute them to my Trans patients!"

Rannik couldn't answer, instead he slowly nodded in agreement.