For the past week or so my baby (3 months old) has had black seed-like bits in his poo. He's currently formula fed, the only occurrences I have found online pertain to breastfed babies ingesting/digesting blood from bleeding nipples or vague horror stories of upper digestive bleeding.
My little boy is otherwise perfectly well, eating well and happy in himself...but I am freaking out at the thought of some sort of stomach bleeding affliction causing this.
Do I need to take him to the doctor?