My baby boy is 3 months old & all his growth thus far is very normal. He has no problems whatsoever about his health & he is very playful healthy. But for about 3/4 times, I noticed milky white thick substance in his diapers while changing. It doesn't smell, but it feels like curd. I don't know what is this. My baby boy doesn't seem to have problem due to this since he is not showing uneasiness during urinating. Please help.