Hello, could you please tell me if your daughter is having a cold? She…

Hello, could you please tell me if your daughter is having a cold? She's constantly coughing and wheezing, and sometimes it seems like she has a stuffy nose. I give her Aquamaris twice a day and clean her nose. But still, she sometimes breathes through her mouth. I look at her nose and it seems clean, but I don't understand what's wrong. ? Has anyone else experienced something similar?