No, of course not.
So the preexistant Son, the autotheos, could not be born of Mary since that would imply a creaturely nature to his divinity.
The moment of incarnation, when the Holy Spirit energized the union of God and man, was when the egg divided into the embryo. Do you agree?
If so, I will grant you "Mary the mother of Godman". Mary the mother of God is heretical since it is incomplete and leads towards Monarchianism.