What episode of Angel does Cordelia say I'm not the mom

[Kristine]

In a episode when Darla is pregnant with Connor or when he is an baby, Cordelia says to someone something like "I'm not the the mom," what episode was this and what was this about?

 

[nightshade]

I know she and Fred say it when they take Connor to the hospital for his post birth check up. I think it's the episode Dad