Hello, Bloody mucus while having diarrhea and throwing up are indicating acute gastroenteritis. That is not a good symptom. We should exclude inflammatory bowel disease or infectious bowel disease. So, I highly recommend sending him to ER (Emergency Room) as soon as possible although no fever running. If you can, keep his bloody feces to show to pediatrician. Stool analysis and culture of feces should be carried out. If no inflammatory/infectious disease, then, blood is due to laceration of bowel mucosa due to frequent stool. Until then, you send him to ER, I advise to give the following treatment, if he can keep without throwing: - Plenty of fluids to keep well hydrated - Oral rehydration salts to replace the lost fluids - Tasectan for diarrhea - Probiotics to stabilize intestinal flora Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Albana Sejdini