The sense is: “See, Yahweh, and look! whom hast Thou treated thus? Shall women eat their fruit - children whom they must still carry?” the swaddled child being one still needing to be nursed and borne in their arms.
Related Commentaries of Lamentations 2:20
Lamentations 2:20
20 Behold, O LORD, and consider to whom thou hast done this. Shall the women eat their fruit, and children of a span long? shall the priest and the prophet be slain in the sanctuary of the Lord?