Hello, my 2 month old exclusively breastfed son has had loose mostly green stools (sometimes mustardy) for over a month. Sometimes blood has been present. He's been gaining weight and is in good spirits most of the time - has had no fever. Often gets gas pains late at night. We did a 3rd stool and occult blood test and it showed mucus +, some vegetable cells, alkaline pH, few fat, 30-35 pus cells and 3-5 RBCs. Occult blood test was positive. The dr recommended removing dairy a few weeks ago and my son is taking a probiotic daily. Is this still an allergic reaction/colitis.