Alrighty then, let's get this story underway.

As you've read from the synopsis, all is not right in the CL world, but Yumi's pregnancy is just the first and minor problem.

Enter Suspense Here

Enjoy!

An Unexpected Development
Part 1: Surprise

"Ok Yumi, that should do it" Jeremy said over the intercom system as he sat in front of the computer in the Control Room of the Factory with Odd, Ulrich and Aelita standing behind him, all four of them slightly nervous, worried and confused.
Down a level in the Scanner Room, one of the Scanners opened up with a hiss and a cloud of mist, quickly followed by Yumi as she stepped out of the machine and walked towards the elevator.
"Well, it's going to take the computer a while to go through the scanned info, so would you mind telling us what's going on?" Jeremie asked as she walked up to her friends.
He had a right to sound grumpy. Just like Aelita, Ulrich and Odd, he was worried about her and her disappearance from school that day.
And when they'd finally heard something from her, she'd given them no answers but an order to meet at the Factory.
Yumi took a deep breath to steady her nerves, looked her worried friends in the eye and said:
"Well, in a nutshell... I'm pregnant"

Flashback - Early Morning

The day began so perfectly with a deep blue sky speckled little with small white clouds, the song of busy birds and cars and people filled the air with activity, and Yumi was busy too, throwing up in the bathroom.
"Uunh..." she groaned as she stood up from where she'd been bent over the toilet and flashed it before turning to the basin to wash her mouth of the awful taste still burning her mouth and throat.
"What's wrong with me?" she thought as she gurgled some mouth wash before spitting it out. "Am I getting sick? Or maybe it's something from last night's dinner-"
But before she could finish the thought her stomach clenched again, and she quickly rushed and reached the toilet just in time before throwing up into it again.
"Yumi?" her mom's muffled voice drifted in past the closed door.
"Are you OK? What's taking you so long in there?"
"Uh, nothing Mom!" Yumi said, groaning a little as she felt her stomach ache a bit again. "I'm almost done!"
"Well, hurry up or you'll be late for school!" Mrs. Ishiyama said before walking away.
Yumi waited until she heard her mom's footsteps disappear before she slowly got back to her feet.
After washing her mouth again and grabbing her bag, she made her way down to the kitchen, peeked around to make sure her mom wasn't there, quickly grabbed some of those stomach settler pills she'd seen her dad take and then headed out to the front door and off to school.
She knew she should have told her mom, but she was so busy these days with Hiroki and Dad that Yumi didn't want to add more worry to her live.
So Yumi popped on of the little tablets into her mouth where it started to fizz, swallowed and started of to Kadic.

But at school luck just wasn't with her. During lunch, as she and Aelita sat together in the cafeteria and waited for the guys, Yumi was wracked with pain again and almost threw up again.
So with Aelita's help she went to the nurse's office, and after a brief examination by Dorothy, she found herself being driven by her mom to the hospital. "So Yumi" Dr. Erika asked as she sat next to the slightly frightened girl, "I just have a few questions to ask you. Firstly, how long have you had these illnesses?"
"Uhm, a few days" Yumi said as she idly rubbed at the spot on her arm were they'd drawn blood.
"And it's mostly in the mornings?"
Yumi nodded.
"Ok, one last question: How long ago was your last period?"
"Well, I should've had it days ago. It's a bit late"
"I see. Well, then Yumi, I think it's safe to say we know what's happened to you. You're pregnant"

"Pregnant?!" Ulrich stared in shock at Yumi.
Yumi nodded and blushed slightly under the stares of her friends.
"Wha- But- How?" he stuttered.
"That's what my Dad wanted to know" Yumi said as she thought back to how her parents had taken the news. Her mom was shocked, but seemed to take it OK, but her dad...
He'd yelled at her, his face red with anger, and demanded to know how it happened, how she could shame her family like this, and finally and most importantly, who the father was.
"Hey yeah, who is the father?" Odd asked.
"It's not... you and Ulrich didn't, y'know-"
"NO!" Yumi and Ulrich said, glaring at Odd.
"Hey, just asking" Odd said, hiding behind Aelita.
"Yeah, well, that's what my dad wanted to know too" Yumi said.
"It's not William, is it?" Ulrich asked suddenly, his face darkening with anger. Yumi shook her head again.
"Well then who?" Odd asked.
Yumi stared at the floor for a while and then said:
"There is no father"
"What do you mean there's no father?" Odd asked.
"It means, Odd, that I haven't slept with anyone" Yumi said, glaring at Odd.
"I'm still a virgin"
"Oh, uh, oh" Odd said sheepishly, looking thoroughly embarrassed.
"But Yumi, that just doesn't sound possible" Jeremy said from his chair as his computer slowly but surely finished up it's work.
"Yeah" Odd said. "I mean, I might be failing Biology, but even I know you need a mommy and daddy to make a baby"
"Oh no" Aelita said, a thought suddenly popping into her head.
"You don't think it's... Xana?"
Yumi nodded again. "Yeah. That's why I wanted the scan. Just in case he's the one who did this to me"
Beep Beep Beep! the computer beeped as it finished it's job, and as one the gang turned to the computer to see the results.
"Ok, let's see know" Jeremy said as he went through the data.
"Everything else looks alright so far, except for the extra cellular and hormone activity caused by your.. uh, by the pregnancy.
Hmm, I don't see any of Xana's codes or ghosts anywhere"
"Could you still help me find out whose the father?" Yumi asked, her voice a little urgent, a little scared.
"Hang on" Jeremy said as he typed away at the keyboard, and within seconds the computer gave them the answer to their question,
opening up a window on the screen with the child's DNA.
On the left side was Yumi's, and on the right...
"No way" Ulrich said, shocked.
"It can't be" Jeremie muttered, stunned.
"Oh man" Odd said, surprised.
"But how?" Yumi said as she and the gang turned and stared at Aelita.
"Me?" Aelita said in shock as she stared at the screen where her face floated next to Yumi's.