Then you looked back and think maybe you lost your own memory because that did not sound correct after you said it. However the reporters seems to believe what you said. New York Times then asked if vomitting was also one of the symptom but you shut that idea down quickly and explained it was not recognized as a symptom for COVID-19.
You still are left feeling guilty about responding with the wrong answer. There is a decision to be made about whether you should admit to your wrong response or continue in hope there is no damage done for your answer.