I'm breastfeeding my 9 month old, we have had a stool culture and they've ruled out human parasites, they look like strings or worms, are a light brown color and fill the diaper with a strong odor. They come every time he passes stool about once a day for 11 days now. The only thing different in my diet has been a Zpak, yeast cream, some alcohol from New Years Eve and Musinex for a cough we both have. lab thinks they are vegetable fibers but he doesn't eat regularly, I occasionally give him mushed banana or toast or mashed potatos (not on a daily basis either)