The Chief Medical Officers for the UK recommend that if you're pregnant or planning to become pregnant, the safest approach is not to drink alcohol at all to keep risks to your baby to a minimum.
Drinking in pregnancy can lead to long-term harm to the baby, with the more you drink, the greater the risk.
It's recommended that breastfeeding mothers have no more than one or two units of alcohol once or twice a week.
Binge drinking, where you have more than five units of alcohol in one session, may make you less aware of your baby's needs. If you do binge drink, it's essential your baby is cared for by a sober adult.
The latest health advice from the NHS for safer alcohol consumption can be found here.