Dear phips: If the lumps are not changing, I am assuming that the mammogram and the ultrasound ruled out suspicion. A yearly mammogram is recommended to be certain that there are no changes. It is unlikely that the burning sensation is anything to be concerned about as long as the breast is not red or hot (incicating infection or inflammation). It is not unusual for breasts to have discharge when squeezed. Discharge may be yellow, green, brown, white, or even bluish. The time to be concerned about nipple discharge is when it is unilateral (one side only), clear and sticky or bloody, and comes out spontaneously (without being squeezed).