וּלְמִיכַל֙ בַּת־שָׁא֔וּל לֹֽא־הָ֥יָה לָ֖הּ יָ֑לֶד עַ֖ד י֥וֹם מוֹתָֽהּ׃ (פ)
And Michal the daughter of Saul had no child unto the day of her death.
Rashi on II Samuel
Had no child From that day on.12Prior to that day, she did have a child, Yisroam mentioned earlier (Shmuel II, 3:5), see Rashi there.