Sorry - this is going to be graphic...
My exclusively breast fed 6 month old DS has always pooed a lot; he never dropped down from the poo at every meal he had as a newborn (although he now poos all day, and often at night - not just after a feed). He still passes something about 8 times a day - sometimes a proper poo, sometimes a sort of follow through when he farts, and sometimes just globs of mucus. He does do some textbook, korma-with-seeds poos (not had one for a couple of days though), but they mostly have either what looks like chopped up sticky spinach in them or larger globs resembling lemon curd.
I went to the GP about this, who said she thought it looked alright, but sounded somewhat doubtful and said she'd check with a colleague and would call if they thought there was a problem.
The plan was to introduce solids this weekend, but I'm not sure now.
If anyone has any ideas what might be up, I would be keen to hear them. He is otherwise in great shape - no skin problems, following 91st line, very happy (other than when I try to get him to sleep!)