Our baby has constipation since two weeks old. We have a psoas-mesente…

Our baby has constipation since two weeks old. We have a psoas-mesenteric hernia, likely due to it. But every time we help him poop or when we give him Duflapak and he poops, there are white lumps in his stool. What could this be? The color is normal, but there are always these lumps.