The Bible teaches that life in the womb is something that God is aware of.
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, NIV)
This implies that a person has worth even before they are born. Think about it, God knows a person, as he knew Jeremiah, long before they are born. He knows about them, thinks about them, and plans for them.
For you 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. (Psalm 139:13-14, NIV)
God is at work in a person’s life even while in the womb.
This makes each persons life very precious in God’s sight.