Understanding Gestational Diabetes: A Practical Guide to Healthy Pregnancy - from the National Institute of Child Health and Human Development. A very complete explanation of what gestational diabetes is and how it should be managed.

High Blood Pressure during Pregnancy - Patient information from the University of Iowa. Very clearly stated information about why high blood pressure is a concern during pregnancy.

HELLP Syndrome Society - HELLP stands for H (hemolysis, which is the breaking down of red blood cells), EL (elevated liver enzymes), and LP (low platelet count). Check out this site for more information.