Dust allergy

Kaitlyn

So my daughter doctor thinks she may have allergies to dust. Every since I moved to our new place with carpets my daughter who's 6month nothing but stuff up every day I vaccum everyday I have tried saline the nosefrida and still she is stuffed up any other suggestes what eles I can do for her I also have a humidifier in her room. And what are the chances her being allergic to cats and dogs to?? Any advice and help would be great thank u