Get Your Dog Care Questions Answered by Experts
Hello and thank you for using this site to help you. You need to get your dog into a vet asap if he was dragging his legs as this means there is a disc injury along the spine that needs attention. If this happens again you should seek out an ER Vet if your vet is not open.
The fact that she is shaking now tells me she is in pain.
Here is more on spinal issues.
you can try plain aspirin , no tylenol or Ibuprofen products. Be sure to tell your vet you have used aspirin. this can only be used 2 days before you may see stomach ulcers.
dosing for aspirin. http://www.petplace.com/article/drug-library/library/over-the-counter/acetylsalicylic-acid-aspirin