Where is my baby now, if I have had an abortion?

Yet, before the twins were born or had done anything good or bad, in order that God's purpose in election might stand: not by works but by him who calls.  Romans 9:11

Because your baby had committed no sins or had done nothing bad, he or she is with Jesus.  Even though he or she did not get a chance to fulfill God's purpose for his or her life on this earth, equally important is the fact that he or she did not get a chance to do anything bad or sin against God either.  Therefore, he or she did not sin against God.

Romans 6:23 says, For the wages (pay back) for sin or bad things is death (physically and spiritually), but the gift of God is eternal Life in Christ Jesus our Lord.

What should the Christian response be to abortion?

Before I formed you in the womb I knew you, before you were born I set you apart; I appointed you as a prophet to the nations.  Jeremiah 1:5

Listen to me, you islands; hear this, you distant nations: Before I was born the Lord called me; from my birth he has mad mention of my name.  Isaiah 49:1

Praise be to the God and Father of our Lord Jesus Christ, who has blessed us in the heavenly realms with every spiritual blessing in Christ.  For he chose us in him before the creation of the world to be hold and blameless in his sight.  Ephesians 1:3-4

For you (God) created my inmost being; you knit me together in my mother's womb.  I praise you because I am fearfully and wonderfully made; your works are wonderful, I know that full well.  My frame was not hidden from you when I was made in the secret place.  When I was woven together in the depths of the earth (womb), your eyes saw my unformed body.  All the days ordained for me were written in your book before one of them came to be.  Psalm 139:13-16