It happens to me at will and it's been that way since about month 4 or 5 of my hrt. I take progesterone so maybe that's why. My prolactin levels have always been pretty high. It isn't something where they just leak, but if I push on them, like the area on top of and around the nipple, it comes out. It's pretty gross really. I've been happy with my hrt regimen and it hasn't been something that I ever really notice so out of sight out of mind. My doctor said not to worry about it because my other levels are fine. So, I don't worry about it 🙂 Meghan