<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have been experiencing a milky discharge from my breasts without being pregnant or breastfeeding. What could be the problem?  <response>: That could be a case of galactorrhea of unknown cause. To diagnose the issue, we would need to perform a few medical tests. These include hematologic tests blood test to check your hormone levels, examination of your breasts, standard pregnancy test, pelvis exam, mammography mammogram, and a complete physical skin exam. We will also perform a lipid panel test to check your cholesterol levels. 