My temperature is low

My wife, Judy, and I did a rest walk around the east loop for 0.62 miles. I measured my temperature after the walk and again before I went to bed, and the temp was low. I assume I don't have the coronavirus since one of the symptoms of the virus is a high temperature, although about half of the persons being tested positive for the virus don't have any of the known symptoms. I feel fine and am not tired or sluggish.