But I think she would have blood on bowel movement
My baby was allergic to dairy before 1 year old and I couldn’t see the blood but they do a 5 min test at the pediatricians office and they can see if it has micro blood
My baby was like that, it’s a virus 🦠 called Norovirus, also known as Norwalk virus and sometimes referred to as the winter vomiting disease, is the most common cause of gastroenteritis. Infection is characterized by non-bloody diarrhea, vomiting, and stomach pain. Fever or headaches may also occur. Symptoms usually develop 12 to 48 hours after being exposed, and recovery typically occurs within one to three days. Complications are uncommon, but may include dehydration, especially in the young, the old, and those with other health problems
It could be milk intolerance. Ask your Ped to be sure.