<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have not felt well for almost 3 weeks now. I have been to my doctor, who put me on prednisone . I have asthma . It didn t work. I ended up at the ER because I was having very hard labored breathing . Xray was done, doctor says my lungs are clear. I was given an IV antibiotic and IV steroid . I was also given an EPE shot, and a breathing treatment, and sent home. Follow up with my doctor 2 days later because breathing has not improved. I had a CT scan done for blot clots in lungs. CT did not show any blood clots. I have been put on an antibiotic as well as advised to finish the prednisone. I have a horrible cough associated as well. I blow my nose constantly. Now, when I blow my nose, it s blood. My doctor has set me up to see a pulmonary specialist. What are we missing?  <response>: Hello, A plain CT scan of the chest will miss lung clots unless very obvious. A Q scan is a better test to pick up lung clots and suggest you immediately get a consult if you continue to feel unwell. If you had recently been on a long haul flight or travel, recent surgery or immobilization, your risks are higher. An ECG is also helpful at times. Please check in at your nearest ER or AE Emergency today. Thanks. 