Okay guys, don't hate me. I know I need to update Perfect Doesn't Last, and I will - maybe tomorrow, definitely this week though - but I was watching some old Grey's clips on YouTube and came across one for 3x05 that reminded me of a story I came up with many, many years ago. Remember the divorced couple that kept running into each other at work and ended up in the ER because they had sex and his piercing got stuck on her IUD. Yeah. That inspired me. The story never made it out of my head at the time, but now it needs to.

It takes place in season 5 with some changes. Meredith and Derek actually do get married. Alex and Izzie are not a couple. Most importantly, Addison never left Seattle.

Addison Montgomery opened the door and peeked out before making her escape, hoping no one had noticed her ex-husband leaving that same on-call room just minutes before. Thankfully it was quite late, and she made it to her car unnoticed. She grimaced as she caught her reflection in the rear-view mirror, all tangled hair and smudged makeup. What has gotten into me? she wondered. She didn't know; in fact, at that moment the only thing she knew for sure was that for someone so smart, she sure was lacking in the decision-making skills department sometimes.

It had all started innocently enough. She'd had a rotten day. After being stuck in the hospital for nearly 48 hours straight with a ridiculous number of cases including three high-risk laboring mothers, an emergency c-section that resulted in the death of both mother and child, and a risky fetal surgery that went as planned but was, nevertheless, nerve-wracking, she was completely exhausted. On top of that, she'd just broken up with her boyfriend, a pediatric oncologist. To be honest, there was no spark between them and he wasn't worth the tears, but it was depressing to find herself alone yet again while everyone else around her was happily paired up - Derek and Meredith were getting married in just a few days, Mark had recently proposed to Lexie, and Callie was getting friendly with that cute new peds surgeon. And so she found herself in an on-call room bawling her eyes out and feeling sorry for herself.

Things would have been fine if it stayed at that, but no, of course that didn't happen. Derek, just out of an emergency surgery and not wanting to leave the hospital until his patient was out of the woods, also found her in an on-call room bawling her eyes out and feeling sorry for herself. That unfortunate discovery led to him sitting next to her, which led to him taking her pale, slender hand in his, and her resting her weary head on his shoulder, which led to talking and, somehow, though she can't remember quite how, that led to kissing, and wandering hands, and, ultimately, her lying alone and sweaty with no clue where her panties were after Derek apologized awkwardly and made his hasty exit.

The next couple days were spent trying to avoid Derek and Meredith; she was, aside from one awkwardly silent but unavoidable elevator ride with Derek, successful and after that the newlyweds were gone for a two-week honeymoon, giving her guilty conscience a much-needed reprieve.

Finally the lovebirds returned. Derek was hell-bent on avoiding Addison, which was fine by her, but she seemed to run into Meredith at every turn; the resident was pleasant and chatty and eventually Addison calmed down. He didn't tell her. He won't tell her. Everything's fine she told herself.

And everything was fine, for almost a month. Then one day Callie entered the attendings' lounge to find Addison slumped on a couch sipping ginger ale. "There you are! Where have you been?" she asked as she dropped into a chair across from the redhead, whom she hadn't seen in three days.

"Praying to the porcelain god," Addison groaned as she forced down a saltine. "I don't know what kind of stomach bug is going around, but I wouldn't wish it on my worst enemy."

"That sucks. Don't get too close. Arizona and I have a little getaway planned for this weekend."

"Don't worry. I have one surgery I absolutely need to be here for this morning, and then I'm taking my germs and going back home."

Callie's pager went off and she jumped up. "Gotta run. Hope you're feeling better soon."

"Thanks."

Addison just barely made it through her surgery and went home. She spent the next three days much the same as the previous three. By Monday morning she wasn't feeling much better but couldn't miss any more work so she dragged herself out of bed and to the hospital, where she ran into a very perky Callie in the lounge. "You still not over that thing? You look like shit," the younger woman teased.

"And you look like you spent the weekend having mind-blowing sex," Addison noted dryly.

"Yeah, I did," Callie admitted with a grin before turning the focus back on her friend. "So, have you gotten checked out? I mean, it's been what, a week?"

"It's just a bug. I'm fine," Addison insisted as she swatted at Callie, who was reaching over to feel her forehead.

"You don't have a fever. How about chills?" Addison shook her head. "Abdominal pain? Diarrhea?"

"Nope. Just an upset stomach."

"Are you sure it's just a stomach bug?" Callie asked with raised eyebrows.

"Well, yeah. What else would it be?"

"You're the OB/GYN, you tell me."

Addison's head snapped up. "What? No. No. Definitely not. No way!"

"Really? Because I'm not convinced, and I'm not sure you are either," Callie said with a snicker as she studied her friend's shocked face. "When's the last time you had sex?"

Addison thought for a minute. "About...seven weeks," she admitted as what little color she had drained from her face. "But I can't be! You remember when I went to see my friend Naomi in LA? She said I was infertile. I have a zero percent chance of getting pregnant. It's a stomach bug. That's all."

"You keep telling yourself that, and get back to me once you take a test." Callie chuckled and hurried off for her first surgery of the day.

By the time the two ran into each other they were heading out the door. "So? Did you…?" she asked as they walked to their cars.

Addison groaned. "You were right." There was no doubt; one pregnancy test could be wrong, but three?

Callie squealed and threw her arms around Addison. "I knew it! Congratulations! Or...not. What's the matter? I thought you wanted a baby?"

"I did! I do...I just...this isn't how I planned it."

"So, who's the father? The oncologist?"

"Ew, no. Just...no. He could barely kiss, forget about that. It was...a one night stand." Addison's face told Callie not to push it any more.

"Well, I'm here for you. Whatever you decide, I am here for moral support, okay?"

"Okay. Goodnight. See you tomorrow."

Okay, so this chapter was a bit rushed and I just glossed over a lot of stuff because I just want to get into the important stuff but what do you think?