Childbirth International: Provides training and certification for doulas and childbirth educators. The site is full of a lot of good information, including a section "All About Doulas" and a great list of books about pregnancy, birth and related topics.
Exercise During Pregnancy: Here you can find some basic guidelines on how to safely keep fit during your pregnancy while preparing for labor at the same time.
Morning Sickness Relief: Pregnancy-induced nausea can be rough. This site offers ways to feel better by including hints on what to avoid, home-remedies, and products you can purchase.