Hi, ever since my DS started solids (rice mixed with Breast milk) and a few fruits, his poo has regularily been filled with black squiggly things that look like little strings or thin worms (though they're not) or something. I thought it was very strange since he's only had BF BM's, which have been cottage cheese and mustard. Never has there been what looks like a foreign substance. They're gelatenous and soft, but one time one was crunchy and hard! My ped tested it and it wasn't blood, so he said he wasn't worried. Anyone else have this happen?

Thanks, Sally