Bloody show, tmi (no pic)

Nikita
So I had my first cervical exam last night and know that I am only 1cm, 50% effaced and still high and posterior. I've been losing bits of mucus plug for over a week now, but today in the shower lost literally a small handful of thick, dark brown bloody mucus discharge, the color and consistency of a very large, dark clot. I called about it and they had me go to l&d but I was dismissed after an NST and told it was bloody show and not to be concerned. 
Having said that, has anyone else's bloody show been so dark and thick with blood that it was almost black? Again, it was a glob about as big as my palm.
Also, any idea how soon afterward I can expect to maybe have the baby? We are due today.