'Womb' in the Bible

"Before I formed you in your mother's womb I chose you. Before you were born I set you apart. I appointed you to be a prophet to the nations."

For he did not kill me before I came from the womb, making my pregnant mother's womb my grave forever.

Why did I ever come forth from my mother's womb? All I experience is trouble and grief, and I spend my days in shame.