I could have sworn that at the end of one of the seasons (maybe last year), Cheryl had just found out she was pregnant. What happened to this storyline? Or am I mistaken?

I could also Sworn that Cheryl was Pregnant at the end of Season

I'm sure she was. I think it was the cliffhanger. Didn't she take a home pregnancy test? The writers must have changed their minds. I missed the first few shows, so I don't know if it was even discussed.

I do not Remember According to Jim Being a Cliffhanger

I do not Remember According to Jim Being a Cliffhanger

I thought it was the last show of the season. They found out she was pregnant.

I'm sure it was Dana that was pregnant... although Cheryl and Jim were deciding they were going to have another baby.. both admitted they didn't want to..