Sometimes women will notice discharge from one or both nipples. This prompts concern, especially if she has not recently breast fed. Generally we tell women that bilateral, white or clear discharge , which is only present with nipple stimulation (or checking to see if the discharge is still present), is likely to be "normal." Being on birth control pills (or the NuvaRing) can sometimes enhance "normal" breast discharge.
Certain psychiatric medications—especially the antipsychotics —can initiate nipple discharge. Bilateral, spontaneous secretions can be prompted by a pituitary problem, or hypothyroidism. Both low thyroid and elevated prolactin (from the pituitary gland) can be checked for using simple blood tests
The most concerning nipple discharges are those which are red/bloody, unilateral, and coming from just one or two ducts.
Even in daily testing for nipple discharge (by squeezing) or where there is sufficient breast stimulation during foreplay, prolactin levels can be enhanced. Some less common medical conditions causing nipple discharge can include: herpes zoster, lung/kidney tumors, opiates/amphetamines.
You are doing the right thing in going back to your OB/GYN for a focused breast exam and the most "for sure" answer as to the cause of your nipple discharge.
Yours,
Jane
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