Is It Normal To Have A Rising Temperature And Persistent Symptoms Like Fatigue And Cough After Initially Improving From An Illness?

I was sick for about three days. I had a cough, chills, shortness of breath with a fever of 101.8. The fever came down and I started to feel better. I still have fatigue and a cough after 4 days. In the 5th day I felt warm and my temp was started to go back up to 99.4. Is it normal to be over a sickness and have your temp start to raise? I took a covid test that come out negative.