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"Question Yesterday my breasts started to leak milk. I did a pregnancy test today that proved negative. My breasts are not sore or painful. I breastfed my daughter but stopped 18 months ago. It is definitely breast milk, without a bad smell or an odd colour. What is causing this? Answer You were right to carry out a pregnancy test because this could cause some discharge as it is relatively soon after your last pregnancy.  Also, the stimulation of the breast tissue which occurs in early pregnancy is quite capable of causing some leakage of milk. However, you are not pregnant so this is not responsible. It is worth mentioning that nipple stimulation, especially if prolonged during foreplay, can cause milky nipple discharge in some women, so bear this in mind as a possibility. Your breasts are not sore or painful so mastitis is very unlikely to be the problem. Oral contraception can cause some discharge. I see from your details that you stopped taking the Pill 10 days ago, so if that were the cause, the problem should be coming to an end now. One condition that can produce a milky or clear discharge is galactorrhoea, where an imbalance of hormones within the body can stimulate secretion. Certain medication may be to blame, particularly those used in treatments for some psychiatric problems, but thyroid disorders and very occasionally small benign brain tumours of the pituitary gland can lead to milk production. The discharge, you say, is definitely breast milk, which is reassuring because the investigation of any blood-stained discharge would be more urgent. My advice would be to see your doctor to undergo a breast examination and to start some simple tests to see which of the above possibilities could be responsible for your symptoms.  On the face of it, it does not sound like anything to worry unduly about. Yours sincerely The NetDoctor Medical Team   Other Q&amp;amp;amp;As Can anything other than pregnancy make me produce breast milk? Discharge coming out of my nipple Discharge from nipple with lump under armpit Fluid coming out of my nipples I&amp;#039;m definitely not pregnant but seem to be producing milk I have a sore on my nipple I&amp;#039;m so embarrassed by my nipple discharge My nipple bled Orange discharge from my breast Should I worry about breast discharge? White discharge covering my nipples Why am I getting discharge from my nipples?  Last updated 06.11.2013 "^^<http://www.w3.org/2001/XMLSchema#string>
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