A few of my favorite books related to pregnancy and childbirth. This is by no means an exhaustive list, but a great place to start for positive, empowered reading:

Gentle Birth, Gentle Mothering by Sarah Buckley

Birthing From Within by Pam England

Ina May's Guide To Childbirth by Ina May Gaskin

Spiritual Midwifery by Ina May Gaskin

The Thinking Woman's Guide To A Better Birth by Henci Goer

Homebirth by Sheila Kitzinger

When Survivors Give Birth by Phillyn Klaus and Penny Simkin

Lady's Hands, Lion's Heart by Carol Leonard

The Natural Pregnancy Book by Aviva Jill Romm

The Birth Partner by Penny Simkin

Baby Catcher by Peggy Vincent

Wise Woman Herbal For The Childbearing Year by Susan Weed