You must call 911 if you experience these emergency warning signs:

• You are having difficulty breathing
• You feel pressure or pain in your chest
• Your lips or face are turning blue
• You are feeling confused and are going in and out of consciousness

Los Angeles County Department of Public Health advises people with mild but concerning symptoms to call your healthcare provider ahead of time, so that you will be given advice on whether you need to go to the hospital.

Source: LA Public Health