Oh gosh I just hate hearing things like this. Your poor little baby
These little ones are just so tiny and you have to be EXTRA careful around them
But I know it was just an accident and unfortunately they do happen. I would see how she is tomorrow and if she is acting funny (or won't walk, or even limps) AT ALL - I would take her straight to the vet. Please do not hesitate in taking her if she is acting like it hurts her to walk, or if she is limping...there could be a real problem there. Hopefully there isn't, but it's better to be safe than sorry. And as kaymo asked, is she licking it at all?? I am saying a Prayer for your little one
Please keep us posted on how she is doing.