I have a 11 week baby. She only takes only formula since a month ago. Everything was fine with her poops till a week ago. She poops normal but in her poops I find black sperks like someone put pepper in her diaper. She never had that and I asked my family doctor and she didn't care. She told me just if that poop was all black then I have to worry. I'm worry that is blood or that she is allergic to her formula.... Someone had the same problem with their babies poops?