Mocha was running and not sure what happened but she tried climbing our short steps, which she is used to but when I looked closely she started limping.
Corgis are notorious whimps, at least the 7 I have had were. She probably just got a slight sprain. Try to keep her quiet for a day and see what happens.
I am sure that is what it happened, maybe just a little sprain. How is she doing today? As I said before, I have had 6 corgis and they all were drama queens! (Except one, he was a drama king!)