I Went To Dr On Sunday For Fever, Coughing, And

I went to dr on Sunday for fever, coughing, and just overall feeling awful. Told I had upper respiratory infection and was given amoxicillin and sudafed. Now 4 days lafter, still running fever off and on, coughing bad, sneezing bad, nose constantly running and almost feeling worse. Do you think I was diagnosed right? It was a cvs minute clinic!