question: Cough and lethargy started on Friday, by Sat. noon had 101 temp. Saw Dr who did flu and strep tests. Both negative. He gave me rocephin (sp?) and decahedron injections for sinus drainage and amoxicilin 1000 mg twice a day and a round of predizone. It s Tuesday and this is the first day I have felt any better at all. Do I need to return to the dr? Could the flu test have been wrong? Would I test negative after taking the antibiotics now anyway? 55, female, 120