There is reason for your concern.
Breast fed baby having semisolid stools should not pass blood in stool
Its associated with painful defaecation (tenesmus
) which indicates infection in the gut.
A stool test
and an occult blood test
should be done to ascertain blood and infection in the stool.
If infection is present the baby should be treated with relevant antibiotics. The baby should get well within a few days of the treatment.
Hope this helps you out.Have a nice day