For the last 26 years, since the birth of my last child, who i didn't breast feed, i have had a sticky dark green discharge from both breast. no lumps?

I think you: shouldn't wait another year, or even another month, to discuss this with your doctor. Please! Dr. Anne

Breast discharge: First of all, is the green breast discharge expressible with manual stimulation of the breast? If it is, then a MD can take a sample of the discharge and place some on a slide and stain it to find out the composition of the discharge. At that point a cause and remedy may be found.