In general, you should bring your child to the doctor as soon as you suspect that they have whooping cough, whether they are vaccinated or not, but especially if they are unvaccinated. Some signs that you should bring your child to the doctor for whooping cough include: Vomiting after coughing Whooping sound after the cough Sluggishness or exhaustion Extended coughing spells Call 911 or immediately go to your nearest emergency room if you notice any of the following signs that your child is experiencing severe complications with whooping cough: Stops breathing, even for a few seconds Has a high or uncontrollable fever Seizures Severe vomiting and dehydration Skin or lips turn red, purple, or blue from coughing If you suspect that your child has whooping cough, our pediatricians at KidsHealth Pediatrics would be pleased to evaluate their symptoms and provide high-quality treatment. For more information about whooping cough or an appointment with us, please do not hesitate to call us or schedule an appointment. We have clinics located in Glendale and Scottsdale, Arizona, to serve you well! We serve patients from Glendale AZ, Scottsdale AZ, Tempe AZ, Mesa AZ, Paradise Valley AZ, and Phoenix AZ.