What Causes Discharge From Breast And Spotting?

Hi, may I answer your health queries right now ? Please type your query here...Hi I have been taking the depo shot for 2 months now and I am leaking from my breast and spotting for almost a week now and am concerned I am pregnant. I have 2 children already and had leaking later in pregnancy and am concerned. I had no menstral period at all until a week ago and this one isnt a full out period