Leaking Breast

So I was doing dishes and I sat down to watch TV I noticed a wet spot on my shirt where my nipple/breast was it was a small amount but made me wonder what it was so I went to the bathroom and squeezed my breast both of them and some milky white stuff came out in small droplets...I've never breastfeed or anything I'm due for my period in a few days but I've never had this happen ever it's so weird. Does anyone know what this is? Could it be a sign of pregnancy?