A new mum can drink coffee while breastfeeding, with 2 to3 cups a day generally shown to be acceptable. Caffeine passes from your bloodstream into your breast milk, so having too much may make some babies, especially newborns, difficult to settle. Having a coffee after you’ve finished nursing is a good idea (you’ve definitely earned it!). Don’t forget that caffeine is found in non-herbal teas, some medications, chocolate, some soft drink, some herbal products and supplements, and some energy drinks.