"Sorry, sorry, I am sooooo sorry!" Twilight exclaimed as she and Spike appeared in the middle of the hospital lobby, much to the surprise, and in some case amusement, of the ponies waiting there.

"And what, exactly, are you sorry for Princess Twilight?" the young, white-coated mare at the reception area asked, looking at the royal figure incredulously, one of the ponies surprised at the sudden magical 'pop' and an alicorn princess - and her dragon assistant and mate - appearing instantly in the middle of the lobby with a flash of magic, apologizing and looking on the verge of a nervous breakdown.

A glance at the clock confirmed her fears: it was nearly nine-thirty. She was an hour late! "I'm...I'm TAAAAARDYYYYY!" Twilight explained in a very haphazard fashion, her hair starting to muss up from its usually orderly coiffure as she nervously pawed at it.

"Hi, Twilight and I had an OBGYN appointment at eight-thirty? We ran a little late, sorry about that." Spike said calmly in a whisper to the receptionist as he slowly rubbed Twilight's hoof reassuringly, getting a nod from the receptionist.

"Ah, sure thing. You can just head on back, they've been waiting for you."

"Thank you," Spike stated simply to the receptionist, her looking back understandingly. This wasn't the first time she'd seen a mare come in nervous, after all.

As they made their way back, and were hidden from public view in a closed hallway with no windows and the only doors a while down, Spike brought Twilight's muzzle to his and pressed his lips to hers. Twilight pushed back desperately; not in a sexual way, but in a way which could be likened to a foal reaching for a comforting toy, a mare looking for reassurance from her mate and lover. Spike returned the kiss and reassured her by looking into her eyes, knowing that this wasn't just about them being 'tardy': Twilight was nervous, more nervous then he'd ever seen her before. "S-Spike..." Twilight stammered out as she reticently broke the kiss, their lips parting with a nearly-inaudible smack, "...what if...what if I am..."

"If you are, they'll monitor the pregnancy, just like we planned. They'll monitor your health and the foal's, make sure everything's OK, then we'll come back every couple days to make sure you are again for the most possibly dangerous first months. After that, they'll monitor you once weekly to make sure the pregnancy is stable and make sure everything looks OK inside of you too. We've talked about this with Celestia a thousand times."

"B-But what if..."

Spike softly kissed Twilight again, her pushing back just as forcefully as the first time, before breaking it again. "Twilight, no matter what happens, I'll be here for you. Remember how you said you wanted my foal because you love me?" Spike asked, seeing her nod without hesitance, before taking Twilight's right hoof into both claws and gently squeezing it, "Just remember, foal or no foal, I'll always love you with all of my heart. We'll still always love each other..." he licked her on her nose, "...and besides, we can always try again."

Twilight's eyes teared up as Spike said that, before she quickly grabbed Spike in a tight hug around the neck. The drake was unable to breathe throughout it, his purple face indeed starting to turn maroon before Twilight finally released him. "Sorry..." Twilight said, before giving Spike one more quick peck, "...I'm just so nervous. I know you'd never leave me over us being unable to inter-fecundate—"

"Inter-wha-?"

"Interbreed."

"Oh."

"I know you'd never leave me for anything, and will always be there for me. Just like always, my number one assistant." Twilight said, gently releasing her hoof from Spike's claws so she could stand on all fours. "Thanks Spike, let's go" Feeling more emboldened by her lover's support, Twilight opened the door and entered the examination room.

Accompanying her into the room, Spike stood beside the bed – the bed looking like a maternity bed used for delivering foals, for those mares who preferred the 'lying' technique to the 'natural' standing method of birthing, but was also used for various other types of OBGYN procedures including standard vaginal examinations, artificial insemination, or in-vivo/in-vitro fertilization treatment – as Twilight had her vitals taken by a nurse, including height, weight, blood pressure and magic aura test, then laid upon the bed and rested her rear hooves in a spread eagle, her tail curled up shyly to cover her modesty.

Soon, a mare walked in wearing a doctor's coat. She had a white coat, a magenta mane and tail, and peach-colored eyes. "Good morning Princess Twilight, I am lead Royal OBGYN and radiologist, Love Bundle, personal physician of both Princess Celestia's and Luna's feminine health," the mare said, introducing herself and giving Twilight a curt, polite bow, "Our Highness Celestia has asked me to be responsible for your health during any possible pregnancy and this study, and I agreed. Now, just a few questions before we begin to test the probability for pregnancy," the middle-aged unicorn mare asked as she held a clipboard in her magic, "firstly, have you experienced any dizziness or sickness..."

After a few banal questions, Love came to the final question: "Finally, has your desire for physical closeness and intimacy or sexual relations increased in the past few weeks. More specifically, has this happened after your previous estrus ended, with another estrus not starting on your normal schedule?"

"Well, no, another estrus has not started yet, and yes, I have been feeling 'closer' with my coltfriend here..." Twilight said, reaching a hoof over and innocently resting it on Spike's thigh.

"Yeah, that's putting it lightly. She's been insatiable in the sack for about the past two weeks. More often than not I'm mounted on her and my cocks—" Spike started, but was sharply interrupted.

"Spike..." Twilight yelped, her face flushing red, ears flattening, and tail dipping further between her legs in embarrassment.

"OK, sorry, always gotta be so anatomically correct...my penises are buried deep in her—"

"Spike!" Twilight groaned out, her face almost beet-red at this point, now covering her face with both hooves and wings in shame.

"What? She asked about any unusual behavior, and you've been super horny, so—"

"That doesn't mean you have to tell her everything..."

"So, you mentioned an increased sexual appetite? How much increase in the past two weeks than before?" Love asked non-nonchalantly, as though mares' sex lives were her everyday business. Indeed, however, they very much were, or at least the results of them were.

"Oh she's been insatiable!"

"SPIKE!" Twilight's wing-muffled voice said in another embarrassed grumble.

"How much so? Increased sexual activity could be linked to pregnancy hormones, as well as the instinctive urge to keep the stallion who impregnated her close to assist with food-gathering and care-taking for the pregnant mare."

"Oh, I've been wrecking her every night—"

"Spiiiiike!" Twilight grumbled, her face flushing red.

"—matter of fact, the reason we're late is because I had Twilight in the shower, and I was plow—"

The rest of Spike's statement was a muffled mumble as Twilight's spell wrapped around his snout, and when he started gesticulating, Twilight's magic also captured his claws. "Sorry Doctor Love Bundle, but Spike seems to be a little too...excited about having me as a mate and takes to bragging just a little too much it would seem..." Twilight said while furiously blushing, the last part in a low grumble as she glared at Spike with a look that could kill if an expression could be lethal, while also wondering why she hadn't shut him up earlier. For some reason, she felt...proud that Spike so utterly satisfied her sexually. Proud that he was her stud of a dragon, claiming her every time he could.

"It's no problem Ms. Sparkle, anything and everything said here will be kept strictly confidential to myself, and the other Princesses only if that information is deemed strictly necessary for the study. The knowledge of your maternal condition and potential foal's development will also be limited only to the small group of trusted doctors involved in the study, and including the princesses and your coltfriend. Needless to say, what was said just now will not be relayed outside this room," Love Bundle said with a reassuring smile, before levitating a standard clear-plastic, lidded medical specimen cup over to Twilight, "Now then, with the preliminary questions out of the way, if you can please take this cup over to the restroom there and fill it to the marked line with urine, we'll get right on that pregnancy test. We'll take blood later to do a second test just to make sure, since that's a more accurate test."

Twilight nodded, took the cup in her own magic aura, and headed into the restroom.

Spike waited as Twilight took a disproportionately long time in the restroom compared to a normal 'number-one', him almost tempted to go over and ask if she'd fallen into the toilet, before finally Twilight emerged with a heavy blush and a full cup levitated in her magical aura. "Sorry...nervous," Twilight explained, getting a simple nod and another reassuring smile from the doctor. Love quickly drew some blood from Twilight painlessly, then handed the code-name-marked samples to a lab technician to be rushed to the lab 'for expedient processing'.

The two lovers waited with a mix of excitement and trepidation for the results, Twilight watching as the doctor was meanwhile filling out various forms bearing Princess Celestia's personal seal. "So, what are those?" Twilight asked, glancing over the paperwork.

"These are forms sent to me by Princess Celestia herself to fill out regarding the state of your health and the results of any tests we perform on you. No treatments or exams will be harmful, or even be a risk of being harmful, to you or any potential foals in you," Love explained, before tapping another, much taller stack on the floor beside her desk, "and these, are to be filled out after each future examination for the entire duration of your eleven to twelve month potential pregnancy and sent back to her, including requests for any magical tests' results and sonogram images of your womb and ovaries at the three-month exam - when it would be more viable to see any fetuses attached in the uterus - and any future ones. This room you are in and I myself are to be dedicated for your service and yours alone for that duration, by Royal request."

Twilight nodded, looking at the half-meter tall stack of forms to later be filled. She'd expected Princess Celestia to document everything, and should have known she'd be as thorough with this as she was with everything else she did. She smiled as she sat back next to her lover, laying her head on his shoulder and feeling him nuzzle into her mane, feeling reassured in two ways now; by her mate at her side and by her mentor's careful monitoring.

Minutes later, the test results were brought back, with the doctor and lab technician who had completed them looking pretty surprised and the former writing down the results on the form for Celestia, before coming over to Spike and Twilight. Spike was once more holding her right forehoof in both claws, both looking at the doctor mare with anticipation. Instead of speaking though, she simply set down the test results, with a big red stamp on top of both pages:

Pregnant

Pregnant

Instantly upon seeing that, that she was pregnant, Twilight flapped her wings and lept out of the bed, tackling Spike into a hug, both squealing with delight as they soon hit the floor. Spike felt Twilight's lips meeting his in a passionate kiss even as they were airborne, his mind still trying to compute what he'd just seen on that paper: that he, a dragon, had gotten his pony mare lover pregnant.

"Quite unexpected to put it lightly I must say," Love Bundle said, getting the smooching lovers' attentions, "now, before you get too excited...though I see it's already too late for that..." She sighed, an unsure expression coming over her face as she briefly pawed at the ground in nervous habit, "I should warn you that we have no idea what will happen with a hybrid offspring of equine and draconian genetics. I hate to say it, but I won't sugar-coat it: Princess, Spike, given that we know basically nothing scientifically about dragon-pony hybrids – despite the legends of their existence and healthy, long lives in the very distant past – and it's very possibly you may have a miscarriage in early pregnancy if your body rejects the foal, despite the sperm and ova fusing and the zygote likely starting to multiply. These tests could also be false positives. If the pregnancy makes it to three months, when the blastocyst makes it to the uterus and implants during a typical equine pregnancy, both possibilities will be much less likely and we can do an ultrasound or magic-based scan to test for its development."

"Oh..." both mumbled, clearly looking rather sad at that possibility.

"Well, you won't know until you try, right? That was your plan after all, right princess? To have a kid with your dragon love?" Love asked, smiling confidently to Twilight, then Spike; "I'll prescribe you some prenatal vitamins to make sure everything goes smoothly throughout and both mama and baby are getting what they need, and you'll be taking them throughout the whole pregnancy. After the fourth week, we'll—"

Twilight zoned out of what the nurse was saying, her mind still wrapping around that one simple fact: Spike had gotten her pregnant. All those long nights, him humping into her, knotting her and filling her up, it had worked! Her plan had come to fruition! Her mind was already racing at all the possibilities that Spike's draconian traits and her pony traits could have combined into, each possibility making her smile widen.

"—and that should help increase our knowledge of a hybrid's growth. I'll make an appointment for you in two days for your vitals and blood to be tested, then every two days after, then I'll line up that ultrasound I mentioned at the three-month mark to see how everything is going. I am also going to do some basic physical and magical tests as well right now before I let you go; giving your magic aura an in-depth examination past the cursory one given to all unicorns in a basic health exam for any abnormalities, a full physical exam, a pelvic exam, all that. Is that alright with you, Your Highness?" Love said, shaking Twilight out of her trance as she heard her title.

"Oh. OH! Um, yes, that should be fine." Twilight replied, with Love pulling on some gloves.

"Well," Love said, taking off the gloves, "you've passed everything with flying colors: you are a fully healthy mare, more than capable of carrying a foal to term with no difficulties. That this likely isn't a normal foal is what worries me though."

Twilight and Spike shared a small smile at the news she was healthy, sharing a hug. Love smiled herself, before nodding. "Alright, so will you be available for an examination in two days at ten AM? Princess Celestia has requested a bi-daily exam be performed on you to record everything possible for the study, and for your health. Of course, if anything unusual or worrying happens, you are free to come to me at any time, any day, twenty-four-seven. I don't care if it's on Hearth's Warming at dinner time. If it's important or concerning to you, you come get me. Hay, we may even share dinner with ya." She added a wink for emphasis.

"I should be free for ten AM throughout the week unless something major comes up; I already gave you my schedule," Twilight said simply, before getting a nod from her royal physician as she went and fetched her pharmacy notepad and her own schedule. It'd be a long next few months, Love Bundle knew, with her marking every other day with a lavender tick at 10 AM, before making a big purple circle six weeks from then.

As the two walked out of the room, Love sighed. "Wow, a mare, an alicorn mare, gets knocked up by a drake for the first time in modern history and I'm the one who gets to supervise and care for her. This promises to be tons of work no doubt," she said, softly shaking her head as she got started on yet another form, before smiling; "but oh what a unique opportunity this presents: the first mare to ever study a pregnant alicorn, and one with a dragon's spawn to boot! Who knows, if I play my cards right, I may even be the first doctor to examine a dragon's sexual anatomy in-depth too!"

Author's Note

Twi's preggers! :D

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A day late for Father's Day, but hey, here it is! Happy Father's Day Spike!

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