HELP: Breast Discharge, Milk, .. ???

It has been roughly 3 years since I've breastfed. My husband and I have been ttc for 1.5 years now, and have suffered one miscarriage during that time. I am currently not pregnant, but I am able to express what looks like colostrum/milk out of both breasts. Although more out of my left. Is this normal??? Last night I expressed and it shot out!!