Hello dear I understand your concern Yellowish brown discharge could be a normal discharge, fibrocystic disease, thyroid disorder, hormonal medicine, ductal papilloma, infection. For safer side, consult the surgeon and undergo breast examination, and investigations like Laboratory analysis of the discharge, Mammogram and/or ultrasound, FNAC, Surgical excision and analysis if needed. Treatment will depend on the specific cause. Meanwhile avoid stress, take healthy diet, do regular exercise, maintain hygiene and drink plenty of water Hope this may help you Contact HCM for further health query Best regards Dr. Sagar