Okay so this is a story I had in my head ever since the beginning. But of course I didn't know about fanfiction. net at that point. Anyway so after the chief's surgery Mere throws up so she decides to take a pregnancy test. Apparently they were not as safe as they thought. Anyway Mere was gonna tell them at the dinner ad guess who shows up. Mere is too angry to tell him and everything goes as it was, until Derek picks Addison. That's when Mere tells him. Will he stay with Addison or go back to Mere? Will she even want him back? Will Addison find out about the baby?

Disclaimer: I do not own Grey's Anatomy or any of the characters/ quotes I use.

GAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGA

He's awake, that's good, oh no, he has that face on, he knows about me and Derek. 'Great' she thought 'I just helped save his life and now he is gonna lecture me. But I don't feel so good, good that gives me an excuse to get out of the room.'

"Meredith," he says.

"Chief I know what you are gonna say and with all due respect I don't want to hear it. Right now, I just don't feel good enough to argue," Mere says cutting him off.

"I know Meredith but he is an attending," the chief says.

"I know it's just, I think I am falling for him and," her stomach lurches. "I got to go!" She runs out into the hallway although she hears him protest Mere doesn't really care, she just needed to find a bathroom. When Mere finally comes across one she barely make it to the toilet so she can dump the contents of her stomach into it. When it's all over she sits there and thinks. 'Why the hell would I be sick?'

Wait, when was her last period?

"Okay, let's think," she began to think aloud. "Three weeks, no maybe four, no five. FIVE! I skipped it didn't I. Wait..." She counted over in her head. "SIX! Six weeks since I had my period. Am I pregnant, I can't be pregnant. It's Derek''s it has to be right? But we used protection, oh god!" I get up flustered, I need to find someone, Izzie or Christina. Izzie, she kind caring, she would care. I start searching the hospital for her, what do you know she is in the on-call room, thank god, she is sleeping.

"Izzie," she whispers, when she doesn't stir. "Iz," she says a little louder. She still doesn't stir, Mere comes up right next to her ear. "IZZIE!"

"What who's there, I know karate," she says falling off the bed. Meredith giggles slightly and meets Izzie's angry and annoyed eyes.

"Meredith, what the hell?"

"I need a favor Iz," she says.

"Well I need to go back to sleep so excuse me," Iz says trying to make it to the bed.

"IZZIE," Mere says loudly but then adds more quietly. "I think I am pregnant."

"What? Mere that is...."

"Before you congratulate me I need you to stick me with a needle."

"Sure Mere, anything," Izzie disappears in the hall and returns with a blood kit. As the needle enters Mere's vein she winces slightly.

"God Mere," she teases. "You're a doctor and you can't take a little needle."

"Shut up and get that to the lab, I have dinner with Derek in 2 hours."

"One question is it...."

"Yes it's Derek's if I am pregnant."

"Oh my god, you may be pregnant with McBaby!"

"Keyword may, and I hope not!"

"Why not Mere, babies are adorable."

"Yes but you didn't have Ellis Grey as a mother and inherit the baby mama genes."

"You did not."

"Anyway I don't want to force Derek into a relationship."

"Trust me Mere, McDreamy is pining for you."

"Sure he is Iz."

"Okay why don't you rest I will be back."

"Whatever Iz," Mere says hopping on the top bunk and staring up at the ceiling. 'Could I really be pregnant? I am so not ready to be a mom, but Derek would be a great dad.' Her hand traveled to her stomach where she may be carrying a tiny person. She smiled. 'Maybe it won't be so bad after all.'

When Izzie enters Mere says to her sarcastically, "So.... karate?"

"Shut up, you scared the shit out of me!"

"Sorry, I figured I would go to you instead of Christina. I really don't need anyone judging me right now."

"That's why I am your good friend Mere," Izzie replies and for the next hour they sat there talking until Izzie's pager goes off. They both hop of the beds and run down to lab. Izzie gets the papers and hand them to Meredith.

"I don't wanna read them, you read them," she says to her friend shoving them back toward her.

"Mere, you should want to find them out for yourself," Izzie say as she starts to open them.

"Fine," Mere grunts and snatches the paper from Izzie. "Oh God!"

"Mere are you...."

"Pregnant with McBaby that would be a yes!"

"Congratulations Mere," Izzie said hugging her tightly.

"Yeah, well I better go find the future father of my baby."

"You want me to tell anyone yet?" Izzie asked as she walked sown the hallway.

"No please don't i don't need the whole hospital knowing the day I find out, because you Izzie Stevens will let everyone know."

"Fine," Izzie sighed and crossed her arms like a kid.

"Behave yourself," Mere said and turned around. "I am serious Isobel, not even George."

"You did not just...."

"Bye Iz!" She left to find Derek. He wasn't in his office, he wasn't in surgery, so she decided to get dressed and wait for him down in the lobby. After waiting for about 10 minutes as he walked out of the elevator she recognized him immediately. Ever since she found out she had been figuring ways to tell him. The first give him the paper. Second blurt it out. And third casually bring it into the conversation. Mere chose number three.

"Hey beautiful," Derek greeted her.

"Hey so where are we going tonight?" Mere asked putting her arms around his neck.

"Well it has to be somewhere I get to show off this beautiful body," Derek told her.

"Why thank you."

"For what, I was talking about me."

"Derek," she said pretending to be hurt and smacked him on the arm.

"Hey, and I guess I got to show you off too."

"So that brings us back to my first question, where are we going?"

"It's a surprise, but I can tell you there is a steak out there somewhere with your name on it."

"Well good, I knew there was a reason I kept you around."

"Yeah."

"Yeah, but Derek there is something I need to tell you..." her voice trailed off when she realized derek wasn't listening. Instead he was staring a red-head walking slowly towards them in probably a thousand dollar outfit. Her fiery red hair was flowing behind her as she walked up to the couple with a smirk on her face. For Meredith time was moving in slow motion. 'Who is this? An ex? What is she doing here?'

"Mere I am so sorry.." he said to Mere and then to the woman. "Addison," he sighed.

"Oh, I don't think we've met," Addison said to Mere extending a hand in which Meredith shook. "I'm Addison Shepherd." Shepherd, the word hit her like a thousand bricks.

"Shepherd," she choked out in disbelief.

"And you must be the woman who is screwing my husband....."

GAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGAGA

So how will this play out, well you will see. Should I continue with this story or not? Please tell me.

PLEASE R&R!!!!!!!!!!!!!!!!