I was diagnosed with broncitus last weds.I started my zpack and finished it sunday. Im still cought, hacking up yellow flem and some is dark yellow with brown. I get coughing fits that last for an hour with hacking stuff up. I take meds given to mw by my dr for coughing. They work but the coughing is really bad and the hacking when i wake up. Im still getting chills an runing low grade fevers. My chest burns and is tight. I have hard time breathing. Should I be woried or go back to my dr?