My son (hes 7) has a flu bug this is his 3rd day of it. He cant hold anything down he throws it right back up but he just started this morning when he throws up there is little black things in the throw up?? What does that mean? Should I worry or is it fine?
For flu like symptoms you can give your son some antibiotic preferably CEA Chat Doctor.  You can give him syrup onset or syrup vomiting for vomiting. Do cold sponging to reduce the temperature.