Thanks for replying Kay. I just pulled this off the website for the emergency vets in Countryside by you.

Typical signs of an allergic reaction are skin redness and itching. Other signs include swelling of the muzzle and area around the eyes, as well as wheals or hives.

It's not swollen so bad where she can't breathe. It's not red and she is not itching it. Should I give her some Benadryl? She has never had a reaction before, this is a first for her and I.