When Does Breast Milk Come in? What You Need to Know
The short answer is no. Although your breasts will likely grow larger before and during your breastfeeding journey, breast size is irrelevant when it comes to how much milk you produce. A mom with small breasts might have just as much milk supply as a mom with large breasts.
You may start producing breast milk months or weeks before your due delivery date. One of the first signs that your breasts have started producing milk is that they will become fuller and heavier, and they may even hurt sometimes. During the second trimester, your breasts begin to create colostrum.