5 month old breastfed. white mucusy stools. normal consistency. low grade fever. fatigue. what could this indicate?

? Viral infection: mild though, so long your baby is feeding well, and keeping milk/food down, passing urine well, no other symptom, just observe, some antipyretic would help too/ bathing, if more fatigued, not feeding well, high fever, or any other symptom, please see his doctor

? White ?: If the stools are truly white, the lack of any bile pigment from the liver is abnormal. While mucousy stools are common, the absence of color can mean a blockage in the bile tract.You should have this evaluated by your doc.Bring a diaper with an example stool.