So I went in to love on her a bit and check on her and she turned her back to me and she has black on her rear and looks like some dried poo hanging out too. She won't let me get a good look, she is very protective of her body. She had runny bm's on Saturday, so I wonder if she is having them again. Looks like maybe she is from the looks of her litter box. But she has buried it so its hard to tell. Is this an early sign of maybe the start of labor???