IT could depend on a few things. First have you had children before? I am able to always get a little but of liquid out of my breasts even when not nursing or pregnant. They did a breast check and also drew blood for a few tests. I know one was checking my prolactin levels and one was a thyroid test. I know that it can also be an indicator of a pituitary tumor. Nonetheless I would check with your doctor. Mine turned out to be nothing to worry about, but I would rather be safe than sorry.
i would check with your doctor .