13th day - poop topic

Hi all. This morning I had a really dark, smelly BM. For the first 9 days they were lighter and siltier, and yellowish brown mucous. It's still mucousy, but there's a lot more solid matter in there, the colour has changed completely,and, as I said, it stinks. It hasn't stunk up to now. I was hoping I could be done today but with this new development in poo :), I think I need to go on. Either that or finish, knowing I didn't get it all on this cleanse, and then do another one soon. Does anyone have experience with this either in cleansing past the ten days, or within the ten days when they noticed a shift in poo pattern. I'm assuming the lighter colour was the surface gunk, and now it's getting into the nasty more impacted crap. literally. Any help appreciated. julie