Here's a video of Kelly announcing her pregnancy in the middle of her concert....she was performing Piece By Piece, a sad song about her childhood and estranged father, and was getting choked up and kept having to stop, and then just told everyone
ETA:
Here's a longer one:
"And SCENE." "I'm gonna nail the **** out of the song."
"I just didn't want you to think I was on pills or something"