[CanadaSVT]

Hope your dog is doing better. There is nothing you can give it. As long as the dog is not whining, it doesn't sound too serious but what do we know. Like many animals dogs don't want to show pain or weakness, so they will do their best to hide it.
You didn't say what breed it is or which leg. If it's a breed that is suseptable to hip dysplacia, and it's the rear leg then I would say take it to the vet right away.

Good luck.