Bright yellowish diarrhea & upset tummy gas was bloated started yesterday afternoon after cottage cheese(lactose sens)now fever 100.3 lactic acidosis?

Diarrhea: The presence of fever suggests that the cause of the diarrhea may be a viral intestinal tract infection. Lactose intolerance may cause similar symptoms without fever. Lactic acidosis, a severe metabolic derangement, would not apply to your symptoms. Your treatment consists of rest, intake of adequate room temperature fluids, Tylenol, avoidance of roughage, kaopectate as needed for diarrhea control

Gastroenteritis. : My first thought in this context might be that the cottage cheese was bad. Was it sitting out for a whole? Did it taste bad, or sour? Are you nauseous? Vomiting? If your symptoms worsen or last more than three days then visit with local doctor for evaluation.