I have been sick the last 3 weeks with left face pressure on the upper cheek, coughing up green mucus and blowing my nose with green mucus and bleeding and chest pressure. I have been on zpak for 3 weeks, not clearing up. Today I have low grade temp and my face is really hurting on the left side, and I feel like someone beat me up, sore in neck area and shoulders. My dr says its bronchitis , so why isn t zpak working