Hello,
I am sorry your dog is having trouble. This is a tough situation, because your vet is closed, and your dog (while uncomfortable) is not emergently ill. She may have been bitten or stung, or she may have strained a muscle or ligament. It is highly unlikely she has sustained a fracture, but still possible. She may have cracked a toe nail......and even though she is not acting like she is in major pain the fact that she is holding her paw up indicates that she is hurting. You need to decide if she is uncomfortable enough to see an emergency vet tonight, or if she can wait until the morning to be seen by her regular vet. If you decide to watch her and have her seen in the morning, you will need to take her in to the ER right away if she starts to vomit, becomes very itchy, her skin becomes pink or red or if she has facial swelling as these are symptoms of an allergic reaction, sometimes resulting from a bug bite or sting. Please let me know if I can be of further assistance. If this has been helpful, please hit the green accept button. Best of luck with your baby girl, I hope she feels better soon. :)
Emergency and Critical Care Nurse
16+ years of veterinary experience