At 30, i am noticing my breasts getting larger and rather heavy with discharge from one nipple only. not near my menstruation cycle or pregnant.

Evaluation: Possible causes for galactorrhea include but are not limited to use of birth control pills, tricyclic antidepressants, antipsychotic meds, some sedatives, fennel, anise, fenugreek, some hypertension meds, cocaine, opioids, hypothyroidism, prolactinoma, renal dz, pregnancy, testosterone deficiency in men ; significant breast stimulation. Get checked medically.

Unilateral discharge: Discharge from both breasts can be normal and related to a hormonal change but single nipple discharge can be anatomical and may represent a disease process for which you should get checked out. Infection, cancer, polyps, all considerations.