question for ptree

Hi there,
You've been very helpful for me.
I just had another question for you.
I've been doing the bentonite, psyllium cleanse and I do see once in a while small pieces of hard feces that have grooves in them and are kind of twisted looking. Could this be what is in the pockets of my intestines. THe grooves look similar to those in licorice "the candy". But definately hard and twisted. Maybe the twisting is where the grooves come from. It's brown but not black.
Is the old feces supposed to be black. This is brown.
Thanks for your help.