Are we going to see someone pregnant in the end of the 5th season または we'll know who's pregnant in the 6th? (fingers crossed for Cuddy)

The "blind spoiler" that started this rumor has been confirmed to be about a character on an ABC show, not a 狐, フォックス show.

Other than the blind spoiler, no reliable spoilers have been released that suggest a pregnancy for one of the House characters.