Is it possible that you had COVID-19 and not even know it? Sure it is. That is why there are so many positive cases and a good portion of those who have had those positive cases are stunned. Because they are not seriously sick. However, they are just lucky that they did not get the worst of it and they may likely be worried they had passed it onto someone else vulnerable.
Let’s look at the 15 subtle signs that you have already had the Coronavirus now:
A Sudden Fever
You do know that a fever is the hallmark of COVID-19 but you would also think it would be accompanied by respiratory issues. However, you could have not had those respiratory issues and you could have had the fever spike by itself.