Fetal alcohol syndrome is caused by a woman drinking alcohol during pregnancy. The effects of FAS can include physical problems and problems with behavior and learning. There is no known safe amount of alcohol during pregnancy or when trying to get pregnant. There is also no safe time to drink during pregnancy.
Information about FAS
Gaining Knowledge About Fetal Alcohol Syndrome: Results from Oregon's FAS Prevention Program, 2005-2009 (pdf)
Centers for Disease Control and Prevention (CDC) resources: