Jesus is exactly who he says he is and who the scripture says he is.
He is the son of God
he is the word become flesh.
and later..in him ..the fullness of the God head dwelt bodily just as scripture states.
but you wont find God ever say..mary is the mother of God.
never .
Will we find the words "Mary is the Mother of God"? No - not directly. There are references to it, but not a direct phrase. Similarly, you won't find the word "Trinity" in the Bible, or a myriad of other beliefs.
Some related scripture:
Scripture says "and you will call Him Emmanuel, which means God with Us".
Luke 1:41-44 states that Mary is the another of Elizabeth's Lord. Her baby leaped in her womb when she heard the sound of Mary's voice.
Isaiah 9:6 - For to us a child is born, to us a son is given; and the government shall be upon his shoulder, and his name shall be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace.
The important point is this:
Calling Mary the Mother of God is a Christological statement. It isn't a statement about her character, so much as a statement of who Jesus is. There were heresies in the early church, similar to what you seem to be promoting. The phrasing Mother of God was further defined as dogma to help clarify the nature of Jesus as found in Scripture.
John 1:14 And the Word became flesh, and dwelt among us, and we saw His glory, glory as of the only begotten from the Father, full of grace and truth.
Philippians 2:5-11 5 Have this attitude in yourselves which was also in Christ Jesus,
6 who, although He existed in the form of God, did not regard equality with God a thing to be grasped,
7 but emptied Himself, taking the form of a bond-servant, and being made in the likeness of men.
8 Being …
The Word of God became flesh - he didn't come into a human body to dwell here on earth. Likewise, God the Son didn't cease to exist temporarily in between Jesus' birth and His baptism. God is unchanging, and Jesus is the only begotten Son of God....He is eternally begotten. When Jesus became God incarnate as a little child - he was even then 100% God and 100% man.
Perhaps a non-Catholic and non-Orthodox article would help:
http://www.desiringgod.org/articles/advent-and-the-incarnation
It seems like you don't believe this. Am I misunderstanding your view here?