Hi I've NC for this.
For at least 3 years probably more I have had a white discharge from my nipples. It's quite small and barely noticeable however it seems to come out when I have a hot shower.
I have been to the doctors previously over 2 years ago (I can't remember when exactly) and she checked my breasts and asked the consistency. She said because it is white it is milk and to leave my breasts alone and it should go. It isn't liquid and not quite solid it is tiny amounts so is hard to describe.
I am not nor have I ever been pregnant so I thought milk would be unlikely. Has anyone any experience in this?