Set after Threads. AU because Janet is still alive.

She was avoiding him, he could tell. Ever since they'd gotten back from P3X-295, she'd locked herself in her lab, after going to the infirmary for a couple of scrapes she'd gotten when she'd fallen down the stairs with a man named Keegan...

She had actually skipped a breifing. Hammond hadn't been to worried, but he was. Not that he'd admit that, of course. Daniel and Teal'c were very confused, but didn't seem to concerned about their teammate. So, being the good-natured man he was, Jack O'Neill went to check on his Second In Command. Reaching the lab that read "Major S. Carter", he walked right in, not bothering to knock.

"Carter." He said, her eyes seeing nothing, and both her hands below the table. She jumped, startled, jerking her hands up and gasping.

"Sir!" Sam exclaimed. "I-it isn't what it looks like! I-"

"Carter, cool it." Jack stopped her explanation in its tracks. "I don't care what you were doing just now, I do care what you were doing during our breifing."

She stared at him with wide eyes. "I was in the infirmary."

"What for? You only got a few scrapes!" He persisted, leaning against her lab bench.

"Janet asked me to stay..." Sam tried. Uncomfortably, "Can we talk about something else, sir?"

"Yeah, okay. Why have you been avoiding me?" Jack asked.

He knew for a fact that she wasn't avoiding Daniel or Teal'c, just him. So why? Why was she so hesitant to be around him, and alone with him now?

"I... I've got to go meet Janet." Sam said, pushing past him and walking out the door of her lab hurriedly. Jack sighed and left her lab, too, but didn't follow her.

Heading to the commissary, Sam gripped a single piece of paper in her hand, given to her by Dr. Janet Fraiser. Rounding the corner, she was grabbed by strong arms that pinned her against the wall. The paper left her hand and ended up in the hands of none other that Jack O'Neill.

"Sir, don't!" Sam pleaded, but he was already reading the neat writing on the small rectangular page. His eyes widened, then darted up to hers, then back to the page, then to her eyes again.

"Prescription for prenatal vitamins?" He whispered unbelievingly. "Carter, why do you have presciption for prenatal vitamins?"

"Well, uh, I'm... I'm pregnant, sir." Sam admitted, looking down.

"I think you have some explaining to do, Samantha Carter."