Amy stormed out of the bedroom in the morning, and flopped down onto the couch, tying her robe tighter and crossing her arms.

Sheldon hurried out after her. "I'm sorry! I didn't mean to say that!" He called, desperately.

Amy just glared at him and pursed her lips.

"I really am sorry." Sheldon repeated, taking the seat beside his wife.

"I am so mad at you!" Amy stood up and angrily stared down at him. "How could you say that!?"

"I didn't know that it was wrong, but I do now." Sheldon looked downcast.

"How is calling me your 'bitch' during sex ever not wrong!?" Amy yelled, making Sheldon lean back in shock. Amy heard Izzy calling out for breakfast, and she hurried into the nursery. "End of discussion." She said quietly, as she left.

Sheldon breathed heavily and stared sadly after his wife. He put a hand over his face, just as he heard a knock at the door.

Sighing, he got to his feet and answered the door.

"Hey Sheldon! May we come in?" Raj asked, his arm around Brigitte.

"Of course." Sheldon opened the door wider and let Raj and Brigitte in.

"Can I get either of you a beverage?"

"Just some water please." Brigitte smiled.

"Water for me too," Raj answered, sitting on a bar stool.

"What brings you here?" Sheldon asked, producing the water bottles from the fridge.

"We have some exciting news. Howard and Bernadette know, and we're about to tell you, then we're telling Leonard and Penny…" Raj paused and looked at Brigitte.

Brigitte grinned back, and put her left hand out in front of her, revealing an expensive-looking, sparkling diamond ring.

"I asked Brigitte to marry me!" Raj laughed, happily.

"Congratulations!" Sheldon replied, smiling.

"What are we congratulating?" Amy asked tiredly, entering the kitchen.

"Raj proposed to me, and I said yes!" Brigitte squealed.

"Oh wow! Congratulations!" Amy instantly beamed and hugged her pretty Indian friend.

"Do your parents approve of this girlfriend?" Sheldon asked Raj, quietly.

"They love her! They met her when we flew out there in July. They're over the moon."

"I'm so happy for you." Amy smiled, as Sheldon nodded.

"So, how are you guys?" Raj asked, sipping his water.

Amy shifted from one foot to the other and looked down. "I have to tidy the bathroom, excuse me." She hurriedly left the room, and Sheldon stared after her, his heart sinking.

He swallowed down the lump in his throat and turned back to his friends.

Raj and Brigitte looked awkwardly at each other.

"Are you having problems?" Brigitte asked quietly.

"I made a mistake earlier, and Amy's mad at me." Sheldon replied, sadly. "But she said 'end of discussion', so I assumed that she was over it."

"What mistake?" Raj frowned.

Sheldon shifted awkwardly. "We were…Uh having coitus…and she was on top and then I took over, and she was having a…well you know…and I started doing this new move I learned and we were both really into it, and I said: 'move faster, my bitch.' And now she's mad."

Raj was staring wide-eyed at Sheldon in disbelief. Brigitte just looked awkwardly away.

"Y-You called her your bitch? What the hell! That's not cool, dude!" Raj shook his head.

"I didn't mean to, it just slipped out." Sheldon replied.

"Did you apologise?" Brigitte asked.

"Of course I did; profusely!" Sheldon nodded, "but she's still mad at me. What can I do to make it right?"

"I don't know…Er, well its Christmas tomorrow. Why don't you let her open one of her presents early? The best one."

"I suppose I could." Sheldon considered.

..

After Raj and Brigitte had left, Sheldon wandered to the bedroom, and saw Amy sitting on the bed, reading.

"I'm sorry for being so mad at you." She said instantly. "I know you didn't mean to say that."

"Thank you. I'm sorry too." Sheldon smiled.

Amy put down her book and moved closer to her husband, wrapping him up in a hug, and kissing him on the lips.

Isabelle was in her room, and it sounded like she was hammering something. "Didn't we confiscate the tool set?" Sheldon frowned.

"Um…"

Sheldon now raised an eyebrow. "Amy, did you give our daughter access to her forbidden toys to get back at me?"

Amy looked shifty. "Maybe."

He gave his wife a withering look. "What can I do to make it up to you?"

Amy shook her head. "Nothing, I was being silly. I'm not mad at you anymore." She smiled and hugged Sheldon again.

They stood there for a while, just enjoying the warm embrace.

Amy suddenly spoke up. "You could give me another baby…"

Sheldon looked down at her. "But we made that plan…"

"We did," Amy sighed. "But I thought we were going to have sex often to both enjoy it, and also to see if we can procreate again."

"I know." Sheldon sighed, "I know."

..

"Hello guys! Merry Christmas!" Leonard greeted as he opened the door to Sheldon, Amy and Isabelle, letting them into the apartment.

Food was laid out buffet-style on the kitchen island, and Penny was pouring out drinks for everyone. There was no turkey, as none of the gang was that good at cooking, so they had ordered Chinese food, and bought some buffet food to share between them instead.

Everyone was already there, and greeted Sheldon and Amy as they walked in.

They all got chatting amongst themselves, as Penny handed them their drinks. "Help yourselves to food. There are plates up there." She smiled at everyone.

As the gang piled up their plates with food and sat down, Amy placed a plate of finger food in front of Isabelle, who could now feed herself.

"Wow! Izzy can feed herself?" Penny grinned, nodding at the baby genius.

"Yes," Amy replied proudly, "she taught herself a few months ago."

"Robbie is just learning how to feed himself." Penny replied, looking proudly at hers and Leonard's son, who was in a highchair next to Isabelle's.

Once they had finished eating, the gang began to swap their bags of presents under the tree.

The two children were completely spoilt by everyone, receiving educational toys and books.

The guys all mostly got comic book or Star Trek related presents, and the girls got clothes and jewellery.

When it was time for Sheldon and Amy to swap presents, Sheldon handed Amy the first of her presents.

Inside the wrapping was a beautiful, mid-thigh length, oyster-coloured dress, with a deep v-neck outlined with beading and embroidery. It looked expensive.

In the second present, there were some matching patent heels.

"These are beautiful, Sheldon. Thank you!" Amy gasped, throwing her arms around him.

"They'll be perfect to wear to this…" Sheldon grinned, handing Amy an envelope.

Amy tore open the envelope, and gasped again as she pulled out two tickets.

"A New Year's Eve party at the Hilton Hotel!?"

"Yes," Sheldon nodded, "two nights stay, fully catered for, and we get to attend their New Year's Eve party."

"This is the best present ever! Thank you." Amy kissed Sheldon lovingly, and everyone wolf-whistled.

"That's such a thoughtful gift!" Bernadette grinned, peering over to look at the tickets.

Amy gave Sheldon his presents, which was a limited edition The Flash shirt, a pair of jeans in his favourite denim colour, and an annual pass to all of the science centres in California, which he was equally thrilled with.

When everyone had opened their presents, Howard spoke up.

"Bernadette and I have something to tell everyone. We're not trying to steal Raj and Brigitte's thunder, but we think you all should know that…"

"I'm pregnant!" Bernadette squeaked excitedly.

As everyone called out their congratulations, Amy felt her heart sink, yet she smiled and congratulated the couple.

"I didn't think I wanted children, but as time went on, I changed my mind." Bernadette was saying.

Amy got to her feet. "I-I'm just going to the bathroom, excuse me." She smiled.

Her face fell the second she turned her back. She didn't see Sheldon staring after her as she walked to the bathroom.

Amy shut the door behind her and sat on the edge of the bath, beginning to cry.

A few seconds later, she heard the door open.

Damn! Why didn't I lock it? Amy cursed herself.

She looked up, and saw Sheldon standing in the doorway, looking at her with concern.

"Are you alright?" He asked quietly.

"Fine thanks." Amy lied, looking away.

Sheldon closed the door and sat next to Amy on the edge of the bath, his hands in his lap, looking her in the eye. "Did Bernadette upset you?"

"No, no. I'm being stupid." Amy shook her head.

"You could never be stupid. Tell me why you're crying." Sheldon took Amy's hand.

"I know we have Izzy, but I'm desperate for a second child with you." Amy admitted. "And I know it's Christmas, and I know I should be happy, and I know we have our plan, but I'm terrified that something is wrong! That's why I've been so snappy."

Sheldon just looked at his wife, and leant his head against hers, holding her hand and stroking up Amy's arm with his other hand. He swallowed hard. "Maybe after Christmas, we can get it checked out." He suggested. "We have contacts, and they will do it immediately for us."

Amy nodded. "Okay." She looked up at her husband. "Thank you for the presents. I'm sorry for ruining Christmas."

"You didn't ruin Christmas, and you're welcome... Thank you."

There was silence for a few moments, and Sheldon swallowed and spoke again. "You know…We could try again tonight…"

Amy looked at him, and he had a sparkle in his eye and a slight cheeky look on his face, which instantly made Amy giggle.

"Okay," She grinned, kissing him. "Merry Christmas, Sheldon."

Sheldon wrapped his arm around Amy, "Merry Christmas Amy." He returned, pulling her in for a long kiss.