First... the disclaimer... We see the pedi on Monday, so I'm going to ask her as well.
So this morning I noticed small black squiggly lines in DD poo. It doesn't look like dried blood and is pretty small. The only thing different in her diet recently is me giving DD a small amount of mashed up banana from my finger.
DD is BF with Formula supplements. We're not starting solids yet because she's not yet doubled her birth weight and doesn't sit up unassisted, but she's interested in us eating so I've just started giving her a little taste now and then.
I'm wondering if it's the banana, and curious to see if anyone else has seen this.