Breast discharge is not uncommon,it can happen especially if a woman takes birth control pills, during
perimenopause and also if taking medication for depression etc..Is the
discharge coming from both nipples and only when squeezed? If so, I don't think that you should worry much about it.If, on the other hand the discharge comes spontaneous (without squeezing) and from one nipple only, there is some concern and you should have this checked out by your doctor.