I could see the signs of pregnacy easily in this chapter. She always hungry. And Clark notices that's unusal for her.
I really, really, really, hope that it's not Clark's, though. Not that I want Lois to have been raped or anything. But I don't want Clark to have cheated on Lana like that, even if they were half alseep and you could make the arguement that he thought she was Lana. Cheating, when he's in a serious relationship, goes against Clark's character for me, especially when he's obviously in love with Lana. They need to break up before he does anything with Lois. (which, for the record, I want, when the time is right.)
It's interesting that Clark is already noticing some of the holes in his relationship with Lana, though. Yet, again, I expected Lana to be more upset about the sleeping arangement than she was. But then, she hadn't heard the whole story, yet, so who knows what she'll think then.
Cute teasing between Lois and Clark. Keep it coming.