After a the flu (began November 20th) and subsequent case of bronchitus (began around November 24th), I have had a persistent elevated temperature in the evenings of 99.8 to 100.4 degrees. On the morning my temperature is quite normal (98.6-99.3). My coughing is almost gone, but still tight and empty when it occurs. I still have sensitivity in my trachea and in my upper chest. I am puzzled why this elevated temperature in the evenings will not go away after weeks. I have had chest Xrays and they have been read as normal. My Sed rate is 38. WBC is in the normal range and RBC is a small amount on the low side.