Feel so helpless. Ellie is nearly 2 and for the past 3 months she's been back and forth to the vets. 1st time her lungs were congested so had convenia and loxicom. Next visit was a week later, lungs clear but congestion in throat so just given anti inflammatory again and sent away. Had 3 more visits since then, 2 lots of Baytril, and marbocyl, and another convenia injection. That was last week, I'm sat with her now, she's sneezing a fair bit, and making sounds like when you wipe yr finger down glass, kind of quiet wheezing I suppose. This is every so often. She had some white discharge from her nose yesterday. We'll be back at the vets tomorrow but I need to know what else can he do? Different antibiotics, are there any to treat this? I feel so bad for her, she's a bit lethargic but eating ok. Its making be sad they cant make her better. Please can anyone shed any light?