Nipple discharge in women who are not pregnant or breast-feeding may not be abnormal, but it's wise to have any unexpected nipple discharge evaluated by a doctor. A nipple discharge may look milky, or it may be clear, yellow, green, brown or bloody. Fluid that leaks from one or both nipples is called a nipple discharge. Each breast has several (15 to 20) milk ducts. A nipple discharge can also be normal in women who are not pregnant or breastfeeding, especially during the reproductive years.