WomensHealth.gov
The U.S. Department of Health & Human Services offers a place for women at womenshealth.gov
I found an interesting page that gave lots of information that focuses on depression during and after pregnancy. This page is a frequently asked questions page and covered topics such as the symptoms of depression, the baby blues, postpartum depression along with the effects of depression and the causes of depression.
If you live in the United States of America you can check out The National Women’s Health Information Center.
Phone: 1-800-994-9662
TDD: 1-888-220-5446