Dry coughing is the most common symptom of Coronavirus. (Source)
A fever is sometimes the earliest symptom of COVID-19. The World Health Organization saw that about 88% of people with Coronavirus had a fever at some point. (Source)
A fever starts at 100.4 F (that's 38.0 C)
This is the most severe of the three. According to the CDC you should get immediate medical attention if you have:
According to the CDC you should call your doctor if you think you have been exposed to COVID-19 and develop a fever and symptoms, such as cough or difficulty breathing, call your healthcare provider for medical advice.