No, you can not get breast cancer from breast milk. However, if you have breast cancer and you are recieving chemotherapy, radiation, or medicine, you should not be nursing since your milk will be affected.
Breast milk is milk that come from the breast. Breast milk is a general term we use to tell the difference between processed formula and milk produced by a human. It is an odd word since all milk is produced by mammary glands, whether human, bovine or dolphin.