My bearded dragon looks yellow with a dark beard & dark tip

[mamapickle]

My three year old female bd is looking yellow and pale the last few days. Her beard area is dark as is her tail tip. She seems lethargic & not excited to eat. Her breathing seems labored & she has made some strange sounding noises. What is happening? I have a vet appointment tomorrow

 

[SpacialCoogs]

Can you post some pictures? And give us a bit of rundown on her setup and general husbandry?

It's hard to say from your description.