Can breasts leak at 16 weeks?

It is possible for breasts to leak at any point during pregnancy, including at 16 weeks. This leakage is often referred to as "colostrum," and is a thin, yellowish fluid that is produced by the breasts in preparation for breastfeeding. Colostrum is high in nutrients, antibodies, and essential fats, and is intended to provide the newborn with the necessary nutrition and protection in the first few days after birth.