Seventeen days symptoms and conditions

I took a zpak for bronchitis and a sinus infection. (lovely to have both at the same time...) I still had a fever three days into the five day cycle. After I finished the whole five day cycle I felt a LITTLE better, but a week later I developed fever and body aches AGAIN. I went back to the doctor and was prescribed a week of Avelox because they said sometimes the zpak does not fully kick the bronchitis, just weakens it and then it comes back. I have been sick for seventeen days now. I'm a little over it.