P-Pregnant? Are you sure!? He definitely didn't want to believe that his partner was pregnant. Him? A dad? No, especially not at his age. And with his reputation a the son of Gol D Roger and Whitebeards 2nd Commander, his whole life was a death wish.

He couldn't have a kid!

"Are you sure it's mine?" He was clearly worried. Probably more than you even though you actually had to birth the kid.