It is 10pm. It has been 5 hrs. I was able to get in touch with her vet just a little while ago and he told me to give her 25mg of benedryl and to watch for swelling, diarrhea and vomiting. I have not checked yet for hives. I am going to do that now. So far she has had no episodes of vomiting or diarrhea that I am aware of.