My 4 month old mix of min pin and pug fell out of my arms onto the pavement yesterday. We do not believe she broke her leg as she still moves it. How can you treat a dogs sprained leg?

I do not know how to work this web site so before you all start posting horrible things please let me explain my situation. I was taking my puppy in the back yard to go to the bathroom where she fell out of my arms onto the pavement. Because it did not appear,nor does it yet appear to be broken, I did not call the vet immediately. After carefully watching her for 24 hours she seems to not be in immediate pain, only when she puts weight on the leg. This morning she seemed to be about the same so I called the vet to see what I should do, and if they happen to have a payment plan. Of course they said that i should bring her in, but they do not have any sort of payment plan, and if that was what i was looking for that I should call around to see if i could find one that does. They also suggest that i apply for care credit. Now normally I wouldn't have to ask for a payment plan but as it so happens i had an unexpected bill that wiped my bank account. I went online and applied for the care credit, which i was denied. I also called every vet in a 25 mile radius of my house, and not one will do any sort of payment plan. So until Friday a vet is out of the question. Please help