BTW, I hope everyone realizea "Mother of Gods" in my last response was a typo. The intended and correct phrase is "Mother of God."
The heresy of transubstantiation is hallmark of mystery religions, of magic, and it is sacrilege. To insist you know when The Christ took upon Himself the body prepared for Him is of the same type of mystery religion. When Mary was told by Gabriel that what is conceived in her womb is holy, it need not be the Christ inhabiting from the first zygote The Christ. The proclamation that what was in her for Him to inhabit dedicates the body for God's purpose. That body gestating in her womb had been planned from the foundation of the Universe. While that body was gestating, The Word existed in complexity far greater than the forming cells.
Each Christian is born from above by God's Life spark in us. We have each had a body prepared for us in the womb of our mothers. We know not where or in what state was our spirit and soul during that gestating time of the 4D body. Could it be that catholicism makes unwarranted assumption in order to fabricate for Mary dignities to which she is not due?