My son is 15 weeks old. I work three 12 hour shifts per week, so he does consume pumped milk three days per week. He feeds at breast during the rest of the week. He weighs 12 lbs. He intermittently has green colored stools with noticable mucus. Today there was a large amount of thick long mucus in his diapers, some green within the mustard colored stool. I called the pediatrician's office. The nurse is not concerned. She had nothing to add. He seemed irritated with my breast today. He made almost a grunting or growling sound at my breast at his feeds. He has been popping off my left breast, almost refusing it entirely at his feeds. This breast is twice the size as the other, as it was his favorite until this point. It produces almost three times the amount of the right breast.
??What is the mucus
??Why is he "popping" off my breast constantly.