<human>: I adopted her last Friday from the animal shelter and as soon as I switched her food she started having diarrhea. It has gotten progressively worse over the past few days. She saw the vet yesterday and her fecal test came back normal (negative). I have been feeding her white rice and boiled chicken for the past two days. Tonight when I walked her I noticed bright red blood in her stool and of course I half panicked. I don't think she's drinking enough water so I got her some Pedialyte but she's not interested in drinking it.
Do you guys think she'll be okay until the morning when I can call the vet?
Her energy and and mood seem to be totally fine, in fact she's in full blown puppy mode.

Can you provide a brief overview of the text?
<bot>: new puppy has bright bloody stool and I don't know how to help?/what do you think the vet will say?