You start producing small amounts of colostrum as early as three or four months into pregnancy While you probably won’t start leaking right away, you may begin leaking colostrum in your 3rd trimester as you get closer to your due date (you may have noticed before that, as your milk glands increase in number and size.) sometime in your second trimester, your milk duct system is fully developed, so that you can make milk for your baby even if they arrive early
Breast Leaking During Pregnancy: Causes and Remedies
Here's why your breasts might start leaking while you're still pregnant, when to expect it and what you can do about it.
Learn about the stages of breast milk production, early signs like leaking colostrum and breast changes, and what affects timing—including hormones, stretch marks, and more
While some women notice colostrum leaking during pregnancy, many don't experience any leaking at all This variation is normal and doesn't predict your ability to produce milk after birth. When does milk start leaking during pregnancy While your body begins to make milk late in the first trimester, your breasts don't start developing the ability to secrete it until the second.
