Water or mucus plug (no pic)

So I had my mucus plug come out with some pink blood. And I went to the hospital because I kept leaking more of a watery substance with blood still. Of course I got to L&D and seemed to mostly have stopped, but monitored me, had a few contractions but nothing consistent and check to see if I was leaking amniotic fluid and came back fine. So I left and am at home but still leaking more of a watery liquid. I don't know whether to let it be or go back in. What are the chances they got it wrong? I filled a pad in a little over an hour.