MY NIPPLES ARE LEAKING CLEAR FLUID. I've never been pregnant or had a baby although there is a slight chance I may be pregnant but I don't see how that can cause my nipples to leak??? It's freaking me out. I'm not on any birth control either. I watch breast fed babies and I told my mom about it and she suggested that it's my bodies hormonal response to caring for nursing babies all day every day. What hormone causes this? Can that even be true at all? My mom was just making a guess.