My baby had his 1st year MMR and booster jabs recently. Since then he's developed 4 cystic spots on his cheeks and his poo is a strange green colour. Is this normal? I'm starting to get very concerned as he was perfectly fine with all the previous vaccines. The spots in particular seem to be getting flatter and bigger and initially oozed a tiny bit blood when I washed his face. I've attached a photo for reference. Is this normal or should we go back to the nurse?