A/N all right ya"ll while I did a lot of research on several different websites about this particular ailment, I've never personally experienced it and I'm probably being way too over-dramatic but hey- I need some Kendall abuse. I hope you enjoy reading this as much as I did writing it. And reviews are the peanut butter to my jelly! Thanks! Disclaimer: I don't own Big Time Rush. Although I would if I didn't chicken out on kidnapping them from the Tulsa INT'L airport….

"Stop!" Mr. X's thickly accented voice shouted over "Boyfriend" blaring through the speakers of the dance studio. He shut the music off and stared at the only blonde member of the group. "Kendall, you've been a whole count behind everyone the entire song"

Kendall winced, feeling all eyes on him. It was painfully obvious that he was not up to his usual A-game all day no matter how hard he tried, and his friends were starting to worry.

"Sorry Mister X," Kendall sighed. "Can I just have a quick bathroom break?"

Mr. X raised a bushy eyebrow. He had just given the boy a bathroom break not 30 minutes ago. In fact, Kendall had been asking for them all day. "Another one? Ok, but 5 minutes. James, Logan, Carlos, we'll work on our formations until Kendall gets back."

"Thanks Mr. X," Kendall squeaked before bolting for the restroom, certain he was unable to hold in the sudden urge any longer. It had been happening all day, and it was sorta weird. About every hour, his bladder would feel about to burst, but when he'd go to relieve himself, not much would come out. On top of it, he felt unusually tired and was developing a dull pain in his lower back. But Kendall just shook it off, finished his business, and jogged back to the studio.

"Psst, Kendall!" Logan whispered when he saw his friend had rejoined them. Mr. X was busy yelling at Carlos for having crappy extension and used the opportunity to see if Kendall was ok. "Are you alright, dude? You've been going to the bathroom all day."

"Yeah, and your dancing sucks!" James chimed in. Kendall crooked an eyebrow.

"Gee, thanks James. And I'm perfectly fine. I just drank like a ton of soda," Kendall said, though he really hadn't consumed many beverages at all that day. Mr. X interrupted the boys before they could ask any more questions.

"Beginning 'V' for 'Boyfriend'," the foreign choreographer ordered, and they hurried to their starting poses. Kendall could barely get through his solo this time. The dull pain ache in his back was manifesting into a sharp pain, and he felt sorta like he was moving in slow motion. He just couldn't get his body to move the way he wanted it to, and he felt overheated.

Mr. X took notice that Kendall was only getting worse instead of better and dismissed the boyfriend until tomorrow. Carlos let out a squeal of joy and ran to the showers with James right behind him, anxious to leave the stuffy studio and go eat dinner. But Kendall just collapsed next to his stuff to try and catch his breath.

"Dude you are out of it today," Logan observed, taking a seat beside Kendall on the hardwood dance floor. Kendall forced himself not to roll his eyes. Logan was an aspiring doctor, and whenever one of his friends showed any signs of becoming ill, he was breathing down their backs almost to the point of obnoxiousness. Kendall was usually able to suck it up and hide whatever was bothering him, but right now his back was hurting so much he actually debated on telling Logan before thinking better of it. He probably just pulled a muscle and it would heal in a couple days.

"Just tired, no biggie. I'm gonna hit the showers." Kendall grabbed his bag and left for the locker room. 15 minutes later they were showered, dressed, and in the Big Time Rush Mobile, searching for somewhere to go to dinner.

"Burgers!"

"Pizza!"

"Burgers!"

"Pizza!"

Logan groaned. James and Carlos would not stop arguing over what to eat, and their voices were becoming annoying.

"Neither!" Logan finally yelled when it was clear the 2 youngest of the group would not resolve this themselves. "Mama Knight left me a good chunk of money while she and Katie are on vacation and I do not want to eat junkfood every night. We are going to eat somewhere that won't give us heartburn this time."

"Only you're lame enough to get heartburn," Carlos said.

Logan shot the latino a look through the rearview mirror. "Don't taunt the driver! Anyway, Kendall, where would you like to eat?" He glanced at the unusually quiet blonde in the passenger seat. When he didn't answer, he said "Kendall!" A little louder.

"Huh? Oh, it doesn't matter," Kendall said, vaguely aware of what the conversation was about.

"You know what, how about we just go home and I make some baked macaroni and cheese?" Logan suggested in an upbeat voice. Kendall did not look up to going out for dinner.

"And dinosaur chicken nuggets!" Carlos cried cheerfully, making Logan laugh cause he was probably the only 18-year-old who got that excited over a chicken nugget. So about 20 minutes later Logan was piling cheese onto a pan of macaroni and shoving it into the oven, Carlos and James were fighting each other with hockey sticks (All in good fun, of course. What most people thought was violent was really a game to those two), and Kendall just lay on the huge couch listlessly, trying to ignore the pain in his back. He didn't even notice when Logan stood over him, studying his flushed cheeks.

"Kendall, maybe you should go to bed," Logan suggested softly. "I'll save you some dinner."

Kendall blinked, confused. He had completely dazed off. "What?"

"Go to bed," Logan said again, hoping all Kendall needed was some sleep. He grabbed the tired boys hand and pulled him to his feet.

"Nah, I'm good," Kendall said to Logan's dismay. "Whens dinner?" he wasn't hungry, he just asked to keep the doctor-in-training from worrying.

Logan raised his eyebrows skeptically. "10 minutes, but-"

"Great, I'll help set the table!" Kendall cut off Logan in midsentence and headed over to the kitchen. Logan didn't miss the way Kendall was slightly hunched over and walked a little slower than normal, as if he was afraid much movement would jar something that was hurting, and Logan was determined to find out what was causing him so much pain.

About halfway through dinner, Kendall was wishing he had taken his doctor-friends advice to just lie down. His back hurt, he felt more tired than he ever had in his life, and his appetite was non-existent. Food was simply unappealing. But he knew if he didn't start eating, his friends would know something was up because he was always hungry.

The macaroni was tasteless mush to Kendall, and as soon as he swallowed the first bite he felt queasy. Thinking it was all in his head, he forced a few more bites down.

"Crap, I don't want to get sick," Kendall thought when the flipflops in his stomach didn't go away. He pushed the rest of his food around on his plate so it would atleast look like he ate something, while Carlos, James and Logan shoveled forkful after forkful of the noodles into their mouths as if they had 3 stomachs.

"Dude, aren'tchu gonna eat that?" Carlos asked, pointing to Kendall's plate. His mouth was stuffed with mac-and-cheese and the pan was empty.

"No, it's mine!" James practically screeched, reaching for Kendall's plate.

"It's all yours, I'm done."

'You barely ate anything," Logan accused. Kendall sighed. The kid was getting annoying.

"Logan, I'm just not hungry. It's not the end of the world," Kendall said in a slightly whiny tone. He just wanted to deal with this himself.

"Fine, but Mama Knight put me in charge and I say you need to go to bed," Logan said.

"You can't tell me what to do," Kendall said, raising his dark eyebrows so they disappeared completely under his blonde hair.

"Mmm, yes I can," Logan argued. 'Mama Knight said I could, so go to bed." With that, Logan pulled Kendall off his chair and pushed him towards the direction of their shared room. Kendall obliged, mumbling about Logan being bossy when he was secretly thankful Logan was forcing him to lie down so he wouldn't have to play video games or challenge each other to roller-hockey in the house like they normally do.

"Ooh, bed," Kendall whispered as he fell into the bundle of blankets and pillows. Any intentions to brush his teeth and undress flew out the window. He was still feeling faintly nauseous and was so fatigued he could not get up even if he wanted to. The sick blonde turned his head to the side to look at his digital clock, which read only 8:00 pm.

Not 5 minutes later, he could hear James and Carlos screaming obscenities at the television, obviously playing some war videogame, and Logan unsuccessfully trying to shut them up.

"Ughh, please be quiet," Kendall groaned, wrapping his pillow around his ears to muffle the sounds and curled up tighter under his blankets because even though he had been feeling hot earlier, now he was starting to shiver. Despite his friends being so loud, it didn't take long for sleep to overtake him.

Kendall woke up with an abrupt start, groggy and still feeling fatigued. Even though he felt like he was only asleep for 5 minutes, it must've been in the middle of the night because the apartment was dead quiet and Logan was snoring ever so softly in the bed across from his.

It took a moment for Kendall to realize why he was awake so suddenly until he felt the intense pressure in his bladder. He had to pee so bad! Barely registering the sharp pain in his back, he bolted from his bed and to his bathroom to relieve himself.

"Ahh," Kendall hissed quietly when he released. It burned, like nothing he ever felt before.

"Well that was weird," he whispered when it was finally over. He gripped the sink with white knuckles, trying to decipher why peeing hurt so bad, and why he was covered in a cold sweat.

Kendall took a deep breath and shook it off as nothing. He lifted his head to look in the mirror and was a little shocked by what he saw. His hair was matted down with sweat, his eyes were slightly glossy, and his usually tan skin was a sick grayish color.

"Oh no, not now," The tall boy groaned to himself. He could not be sick now, not with Gustavo on their case extra hard this week. They were supposed to be getting ready to shoot a music video soon and Kendall could not deal with the flu right now.

"I am not sick," he said sternly through gritted teeth. He opened up the medicine cabinet to grab a couple aspirins, which he washed down with water, than shuffled to bed.

Unfortunately, sleep would not overtake Kendall as quickly as it had last time, no matter how hard he willed his body to fall asleep. He was just too sick feeling. He was constantly either too hot or too cold, and he finally just opted for removing his sweaty shirt and cuddling under a blanket.

The queasiness he had acquired at dinnertime had not yet faded, and than there were the 1000 tiny daggers somebody was shoving into his lower back. God it hurt. Kendall found himself silently cursing the aspirin for not helping.

Minute after slow minute passed, and after barely an hour and Kendall was finally feeling relaxed, exhaustion overriding his odd symptoms, that pressure in his bladder returned. But Kendall was too tired to get back up, so he tried to ignore it best he could.

Bad idea. The pressure quickly turned to pain, and once again Kendall found himself cringing as he released the burning liquid. A couple tears escaped, but since no one was around, he didn't really care. Moving slowly from the pain in his back, Kendall went back to bed and curled up pitifully. He wanted so badly to crawl over to Logan's bed and wake him up because he desperately needed physical comfort and to know he wasn't alone. He even pondered calling his mother. Mom always made him feel better.

But no, he was Kendall Knight, and Kendall Knight never complained. It was just a little pain, probably some pathetic flu even though deep down he knew his symptoms did not match the flu. But either way, he knew he could handle it. He had too.

Kendall did eventually fall back to sleep, but throughout the night and early morning he was frequently back and forth from the bathroom to his bed. Sleep, pee. Sleep, pee. It repeated itself 5 times before Logan's alarm blared annoyingly at 10 am.

"Kendall, wake up buddy, it's the first rehearsal for our new video today," Logan said. Kendall just moaned, cheeks still a little flushed. It concerned Logan, but there wasn't much he could do about it when Kendall was so intent on keeping his health a secret.

"You have 10 minutes before I sic Logan on you," Logan joked. He grabbed a pair of shorts and a tank and went into the bathroom to change and wash up. When he returned to his room, Kendall was still in the same balled-up position, making no attempts to wake up.

"Kendall, come on Bud, we can't be late. Gustavo will murder us," Logan said. Kendall refused to move, and Logan grinned deviously. He was going to spare Kendall the torture of Carlos, but decided to grab the blankets wrapped around the blonde's body and pull them off, making him flip over.

Kendall yelped in pain when his warm blankets were ripped unceremoniously off of him, the sharp pain in his back jarring him awake. Kendall buried his face in his pillow and breathed deep. Logan assumed he was pouting and not really in pain, which was what Kendall wanted.

"Dude, nice pajama choice," Logan joked, though he was worried. Kendall was still in jeans and socks and shoes, his t-shirt was balled up on the floor, and the fact that he slept for 14 hours and was still this tired was a bit unsettling.

Kendall rolled over and cracked a tiny smile. 'I'll be out in a couple minutes, ok?"

Logan nodded. "Ok. Just, are you feeling alright?"

"Yeah, I'm great. I guess I just needed to sleep!" Kendall bit his lip nervously because Logan didn't really seem to believe him, but finally Logan nodded.

"Ok, get dressed!" Logan left and slid down the swirly slide to be met with the usual morning nuttiness of 2-J. James had 'famous" blasting off their sound system and was running around the apartment in a panic because he couldn't locate his dance sneakers, even though he had like 10 pairs. But apparently he had to wear his red ones for this rehearsal for no good reason, of course.

Carlos was in the kitchen, holding a huge bottle of syrup as a microphone and singing on the top of his lungs with the music, quite offkey. It was amazing. During a show or in the studio, the kid knew how to sing beautifully but when he didn't have to be serious, he sounded like a dying moose.

"Lo-Gan, help me find my shoe!" James cried.

"Hold on!" Logan called, going over to where Carlos stood in the kitchen. The latino was watching an entire box of waffles spin in the microwave while he sang.

"Oh, Carlos!" Logan quickly took the box out of the microwave, turned on the toaster, and shoved some waffles into it.

"Logan!" James screeched.

"I'm coming!" Logan said. "Carlos do not touch the hot thing. I'll be right back." Logan ran to the front hall closet and pulled out James' red sneakers before calling to Kendall up the swirly slide and retrieving Carlos' waffles from the toaster.

"Thank you Logan!" Carlos said cutely, starring at the plate of waffles as if they were a gift from God. Logan made himself a bowl of cereal and munched quickly. Kendall slid down swirly after a few more minutes. He was dressed in a pair of black sweats and a red t-shirt and looked pale.

"Kendall we have 5 minutes," Logan said. 'Grab some cereal and let's go."

"I'm not hungry," Kendall sighed.

"You can have one of my waffles," Carlos offered, but Kendall turned him down.

"Nah, I'll just be waiting in the car,"

"No!" Logan said, surprisingly loud. "We have a long day ahead of us and skipping breakfast is not an option. Eat this." He threw a banana to Kendall. The sick boy knew Logan was serious, and since he wanted the little doctor to think he was fine, he ate the banana as quickly as possible despite his queasy tummy.

"Alright, lets get out of here," Logan said, satisfied. "James!"

"Hold on, I'm doing my hair!" James called from the bathroom.

"James, we're going to be in dance practice all day!" Kendall yelled. "Your hair will be sweaty in 10 minutes!"

"I'll get him!" Carlos said. He ran up swirly, Kendall and Logan heard a high-pitched scream, and James was downstairs within seconds. They asked no questions, just left for the studio.

A/N all right, my first multi-chapter I'm posting… Anybody want to find out what's happening with Kendall?