I would not worry too much. Sometimes puppies have a way of being very melodramatic.
HOWEVER... if you notice any swelling, or lumps, please take her in for an exam.
Small puppies are more 'resisliant that they seem' Of course again, if you notice any behavorial changes, or unusual physical changes, do try to get her in to the vet.
If my response answers your question, please accept my answer. If you need additional information please ask and I will do my best to provide more information.
Saving one dog won't change the world, but it will change the world for one dog!!