He has taken two courses of Noroclav (250mg) antibiotics and one course of steroids - OxPrednidale (5mg). His cough sounds hollow, he makes a gagging sound at the end of it and think he brings up a small amount of flem but nothing actually comes out that you see. They were unsure about the swelling at the end of the windpipe at the entry into the lungs, but they thought it might be caused by the cough and that the steroids might be a solution for the swelling. But it is nearly two weeks since the end of the antibiotics and his cough is getting worse each day. I will be taking him back again and think they will suggest camera exploration, which I think they should have done when they did the x-rays. I don't understand how a cough can confuse two vets and that he isn't getting treatment for it.