4 Questions
Is this really blood?
Is blood really coming from the GI tract?
Blood in diaper may also be vaginal or urinary source
Is it a small or large amount
Has this happened before?
Is this really blood?
Is blood really coming from the GI tract?
Blood in diaper may also be vaginal or urinary source
Is it a small or large amount
Has this happened before?
Blood in diaper may also be vaginal or urinary source
Gastrointestinal bleeding 
<2mo
Lower gastrointestinal bleeding
Swallowed maternal blood 
Burns
Stress ulcer
Dark raised skin lesions
Vascular malformation