Weird Nipple Discharge

I have had a dark greenish/yellowish discharge coming from both breasts for about 13 years now.  In 1996 I was pregnant but unfortunately had a miscarriage. It was during/after this time I noticed the discharge and told my OB/GYN.  He said that it was because of the food that I was eating so I just blew it off. Now it's 13 years later and it's still happening.  This only occurs when my nipple is squeezed or pressure is applied.  As the years have gone by my nipples itch and I have to express them to get relief. I have an appointment with by GYN to discuss this but I am worried because breast cancer runs in my family.  I haven't told my GYN about this before because of my previous GYN's diagnosis. My sister is in nursing school and when I told her about this she said that I really need to see my GYN ASAP.  I am very scared and curious to see if anyone else has this problem. I don't have kids and I am 34 yrs old.

[Cleveland Clinic]

Dear concerned 51375:  Women can have some type of nipple discharge or fluid when their breasts are squeezed, and its normal. Squeezing the nipple sends message to the brain and the pituitary gland responds by increasing prolactin levels, which in turn produces discharge from the nipple.  The discharge can come in a variety of colors - gray, green and brown as well as white.  Some women are more prone to more discharge including women on; birth control pills, certain blood pressure medications or on major tranquilizers.  These medications increase prolactin levels in the body.   There is also certain life periods when a person is more likely to get discharge than others: there may be more discharge at puberty and at menopause than the years in-between.

The time to be concerned about nipple discharge is when it’s spontaneous (comes out by itself without squeezing), keeps on happening, and is only on one side.  If it is clear and sticky, like an egg white, or bloody.  If this is the case, you may want to discuss this with your doctor who can ask questions and evaluate as necessary.