Hi, I have been waking up with red bloody mucus since past 3 days. I have cold & flu for a week now, aggressive coughing at times. Mucus throughout the day is yelllow or white, but when waking up it's bright red. Physician did an X-Ray which was clear & gave my Azythromycin with few cough syrups. Asked me to wait for 2-3 days or will be doing more blood tests. I was just wondering, what other experts think about it. Thanks