<s>[INST] My 5 month old baby began having frequent (8-10 per day) green mucousy bowel movements for about 1 week. He is exclusively breastfed and has been taking rice cereal for about 3 weeks. He has no fever, is happy and content and is not dehydrated (he is drooling a lot and has tears)...he is also teething (he got his first 2 bottom teeth last month). Today, his bowel movements went from being green and mucousy to a mustard yellow colour but very runny/watery. What does this mean? Could this be a virus that he is getting over and the bowel movements are returning to normal. He usually has 1-2 mustard yellow curdy bowel movements with some seeds per day - normal for breastfed babies. [/INST] Hi, Welcome to Chat Doctor, More than the color, it's the consistency that worries me. Especially if the baby was started on top feeds, so there is a possibility of infection in gut which can be due to hygiene feed or may be just a viral gastroenteritis. Good thing is that this can be managed very easily by you by making sure you keep giving adequate milk and liquids orally. ORS is a good substitute to prevent deny Chat Doctor.  Watch for any blood in stools. If yes, then need to see a doctor and start antibiotics. Make sure child is active and feeding well and no evidence of deny </s>