"Cas?" Dean mumbled, sitting up in the bed groggily. He looked over at the nightstand, rubbing the sleep out of his eyes as he looked at the clock. The red glowing numbers told Dean that it was 2:24 in the morning. Castiel stumbled out of the bathroom, making his way to the bed. He crawled under the covers, snuggling up next to Dean.
"Unnngh," Cas groaned into Dean's shoulder.
"What's wrong?" Dean asked worriedly. Cas wasn't known for getting sick, but it was very obvious that he had.
"I.. I don't know, Dean! I just, oh, I don't feel well," Cas complained, getting up again and racing to the bathroom, clutching his stomach with his hand clamped over his mouth. Dean got out of bed yawned, stretching. It was going to be a long night.
After that morning, Sam came over to the house. He noticed the lines under the men's eyes, and looked questioningly from Dean to Cas and back again.
Dean threw a Ziplock bag at his little brother. "Cas was up late last night. And again shortly before you came over. Apparently, it's morning sickness." Dean explained. Sam looked at the bag in his hands, noticing the little pink plus sign on the pregnancy test. He was going to be an uncle.