Glad you took Ms. Tipsy to the vet! What a good papa you are.
For future cases and readers: Some signs of a cold, kennel cough or UR infection are breathing fast (short quick breaths), lack of appetite, green or yellow mucus coming out of the nose, no desire to eat or drink, hacking or dry cough, vomiting (more than once and not right after a bunch of water).... if you see any of these odd behaviors, especially more than one of the symptoms above, you should take them to the vet if you do not have antibiotics on hand.
A cold or kennel cough is not very dangerous, but an Upper Respiratory Infection or Pneumonia is extremely dangerous and life threatening. It is always best to get to your vet for some antibiotics, I have seen many bullies friends die from this.