 [ Symptoms ] my 7 year old has been sick for a month   fever productive cough fatigue three different antibiotics what is it  today the doctor said he had a clean exam but she acknowledges something is wrong the fever had been hovering around 100 for the last several weeks but spiked to 103 9 today he had a chest crazy and blood work today no results yet what is keeping him so sick [ Disease ] as much as i would like to help you it is really impossible to diagnose anyone over the internet without the benefit of a detailed medical history some diagnostic tests and of course a hands on examination many of these illness can be attributed to back to back viruses this may be the reason he has not responded to the antibiotics the chest x ray and blood work may reveal a mild pneumonia so your answer may be forthcoming in children viral pneumonia is also common