There are an increasing number of resources available for those who want to limit their exposure to EMR. One of the best is The BabySafe Project.
The BabySafe Project was founded when over 100 physicians, scientists and public health professionals from around the world joined together to release a statement expressing their concern about the risks that wireless radiation poses to pregnancy. You can read their statement here:
They’ve also released a fantastic brochure in PDF format titled What You Need to Know About Wireless Radiation and Your Baby. You can download it here.