How much is safe to drink during pregnancy?

I am 12 weeks pregnant with my first pregnancy. I have been trying to eat healthily and have cut back on coffee and sugar but I do like an occasional glass of wine, particularly at the weekend. How much is safe to drink?

Congratulations on your pregnancy.

There is no proven safe level of alcohol consumption during pregnancy and, for this reason, it is generally recommended that women who are pregnant should avoid all alcohol for the duration of their pregnancy.