I think you should get an examination. There are many benign conditions that can cause bleeding from the nipple so it may be nothing to worry about. In that case it could be hormonal, a benign growth (duct papilloma). Generally, the time to worry about nipple discharge is when it’s spontaneous (comes out by itself without squeezing), keeps on happening,is only on one side, and/or if it is clear and sticky, like an egg white, or bloody. If these symptoms are present a doctor should check you.
Dr. Tamer Fouad, MD
MB, BCh, MSc Internal Medicine.
Consultant of Hematology - Oncology.