Who is the speaker in poem Before Birth of One Her Children?

You're likely referring to the poem "Before the Birth of One of Her Children" by Anne Sexton. In this poem, the speaker is a pregnant woman who is reflecting on her impending motherhood and the complexities of the experience.

Here's why we can infer that:

* The poem uses "I" throughout: The speaker consistently refers to herself as "I," establishing a personal perspective.

* The themes are directly linked to pregnancy: The poem explores themes of fear, anticipation, and the physical changes of pregnancy.

* The poem addresses a child: The speaker directly addresses the unborn child, showing the speaker's intimate connection to the pregnancy.

Therefore, it's safe to conclude that the speaker in "Before the Birth of One of Her Children" is the pregnant woman herself.