Because I've been watching (and reading) a lot of teen wolf lately and decided to jump on the chubby!stiles bandwagon. Also this is my first time writing mpreg, so be gentle. I got the idea for this fic while reading Iheadley's "Three's Company" over at AO3, so I suppose one might say I was loosely inspired by it, though they're (hopefully) not too similar. You should read it if you haven't already.

This will be a multi-chapter future (like 10-15 years or so) fic. Flames will be doused in pumpkin spice lattes #WhiteGirlLife

Warnings for mpreg, threesome, domestic fluffy fluff, and chubby!stiles later on.

Stiles blinked awake and looked at the time. It was around 6 AM, Sunday morning. He woke up feeling clammy, shaky and nauseous, like he had been doing for the past week. Derek's eyes were closed and he was spooning him, and he could hear Scott snoring from the other side of the bed.

Stiles inhaled deeply, waiting for the nausea to pass like it usually did. He would be the first to admit that this sort of thing was probably not good. He should probably see a doctor or something. But the last thing he needed was Derek to go all overprotective werewolf on him. Stiles cringed at the memory of when he had a nasty bout of the flu last winter. Derek acted like he was on his deathbed. Stiles and Scott found it humorous for the most part; how Derek had no idea how often humans got sick, or how seasonal allergies worked. Stiles didn't want to say anything for Derek's sake, for the most part. Derek would worry himself sick.

So here Stiles lay, suffering in silence, willing it to go away without waking his partners. But, unfortunately, it seemed to be going nowhere today. To Stiles' dismay, his stomach made an unpleasant gurgle, which of course, woke both of them.

Scott shifted in the bed, far to tired to acknowledge that the sound that woke him was his uncomfortable lover, and groaned quietly. Derek, however, bless his overprotective heart, opened his eyes and ran his hand through Stiles' bed head.

"You okay?" He asked quietly.

Stiles tried again to close his eyes and focus on Derek's touch and not on how he felt like he was going to throw up. So he settled for a slightly miserable mumble.

"Are you hungry?" Derek asked, mistaking the gurgle for a growl.

And that did it, the very thought of food had Stiles peeling himself from Derek and racing to the bathroom. He heard Derek call his name, and it sounded like that got Scott up.

Stiles hung his head in the toilet and emptied the contents of his stomach into the bowl. He felt Derek rub his back soothingly as he retched, and saw Scott standing in the doorway, looking slightly concerned.

Once Stiles had finished, he allowed himself to be pulled back into Derek's arms, and they sat in silence on the bathroom floor. The cool tile felt phenomenal on Stiles' legs, and he finally felt the clamminess dissipating.

"Dude, are you okay?" Scott asked, brows pulling together. Stiles nodded, still a bit groggy.

"Yeah, yeah, probably just the flu or something. Can we go back to bed?"

Derek, damn him, he was smarter then that and was not buying it, not that Scott had looked all that convinced either.

"Do you think I haven't noticed when you start sweating and shaking in the morning?" Derek growled, but at the same time began rubbing a soothing hand down Stiles' back.

Stiles looked down, more annoyed at being caught then anything.

"Look, I...I'm fine. I mean, I feel fine now."

Scott looked really concerned now. "This has been happening for a while now? Dammit, Stiles, why didn't you say something?"

Stiles tried to make the mood lighter, "Oh, c'mon, don't you get all overprotective wolf on me now, too."

Silence.

"...you should go to a doctor, dude," Scott stated and Derek grunted his agreement.

Stiles rolled his eyes, but knew on the inside that at this point, it was a good idea.

Derek grunted again, but this was more of a grunt of approval. They continued snuggling on the ground and his hands moved from rubbing circles in Stiles' back to wrap around his middle and gently rub his tummy. Suddenly his eyes snapped open and flashed red.

Scott raised an eyebrow, "Woah, what?"

Derek, the man of few words, growled and scooped Stiles up bridal style and carried him back to bed, tucking him in tenderly.

"Go back to sleep. I'm calling Deaton."

"Woah, what? Why? Don't you think I should see a real doctor, not a vet?" Stiles asked.

Derek kissed his forehead and murmured, "Just go to bed, Stiles."

Stiles glared at him, but was already feeling himself almost fall asleep just taking to his partners. He was able to disregard Derek's strange behavior and snuggle back into their bed.

Scott, however, was hot on Derek's heels as Derek stormed down the stairs.

"Do you want to explain to me what's going on here?" He demanded.

Derek shushed him. "Go back to bed with Stiles."

"Not until you tell me what's going on with you! And Stiles!"

Derek put his hands on Scott's shoulders and looked into his eyes. "Just go to bed with him and listen closely. You'll hear."

"Hear what?!"

Derek placed a calming kiss on Scott's lips and said, "Just go."

Derek watched Scott go back upstairs, as he took his phone out and called Deaton, praying that he hadn't changed his number in the couple of years they hadn't spoken.

A muffled, "Derek?" came out the other end, and Derek sighed with relief.

"Deaton." He said

"What are you doing, it's early," He grumbled.

"I...we might have a problem."

"...what kind of problem?"

Scott, still slightly annoyed, walked up the stairs and wormed his way next to Stiles, and listened.

Stiles was already deeply breathing again, a sure sign that he managed to fall back asleep. Listening harder, he heard Stile's steady heartbeat. Nothing else. He fought his annoyance with Derek, what did that even mean, 'listen'? Was he just being cryptic?

Then, he heard a tiny sound accompany Stile's heartbeat. It couldn't...he was hearing wrong.

He hesitantly leaned his ear closer to Stiles' stomach, closed his eyes and listened again.

Sure enough, accompanying Stiles' heartbeat like a melody was another tiny muffled heartbeat coming from Stiles' belly.

So yeah. Just kinda the intro, more drama-ish stuff and fluff later on. Yep. Let me know what you think, and stay tuned for the next couple of chapters. Thanks for reading!