How many glasses of wine are safe?

None! The CDC says that there is no safe level of alcohol consumption during pregnancy.

Recent studies have indicated that very small amounts of alcohol may not be damaging but until and unless there is some strong new evidence, avoid all alcohol during pregnancy.

Not so many doctors believe that in the second and third trimester a glass on wine at night has no ill effects on the unborn and may help as it relaxes the woman. Check with you own personal doctor and don't over indulge.