We just adopted a 4 month-old kitten from the animal shelter & when we brought her home, she was sneezing & kind of huffing (blowing stuff out of her nose.) Her nose was pretty clean though & the fluid from her nose was clear. The vet didn't think it was a URI & only heard noise in her trachea & not her lungs & didn't prescribe anything, just said to watch her. A week later now, she hardly ever sneezes anymore but still huffs & now has dried crusts/boogers that a dark color at the base of her nose. Should I take her back to the vet or is coming towards the end of her cold? She gets spayed the end of next week & I assume it would be bad if she was still fighting this while recuperating from that. Her energy level is still extremely high & she's eating & drinking regularly. Advice?