Less likely to be whooping cough
Thanks for your query.
I can understand the distress you have gone through and inability to get well in-spite of prednisone
and cough syrup. It is less likely to have whooping cough at your age.
Do you have any of the members in the house been affected similarly?
Was there a fever
and production of flame ( expectoration)?
Is there any history of smoking
or exposure to scents or particles increasing your coughing?
In case the x-ray is normal I would advice you to go through the tests of blood to see if white cell / eosinophile count is raised, blood sugar to rule out diabetes
. I would like to add a course of antibiotic and anti-allergic medicines for which you need to consult a doctor as these are prescription medicines and by hearing to your breath sounds can diagnose few diseases like Asthma
and check for associated findings.
Waiting for your response,