Aly, I'm so sorry to hear that Chance is sick. Hopefully the medicine will help him and I also hope it's nothing too serious.

When my RB Pepper was very sick my vet thought that he might have pancreatitus but his blood tests didn't really reveal anything except that he had an infection of some kind. I think it's pretty hard to diagnose.

Prayers and positive thoughts are on the way for a quick and full recovery for sweet Chance. Please take care and keep us updated.