Cut out alcohol
There is no way to know for sure how much alcohol is safe during pregnancy. That's why most experts advise you to cut out alcohol completely while you're expecting.
If you do decide to drink alcohol while you are pregnant, try to wait until after the first trimester. During the first 12 weeks, alcohol is associated with a higher risk of miscarriage. Even after this, don't drink more than one or two units of alcohol, once or twice a week.