Is it possible that I may have been infected with rabies?

So my friend's dog is about 10 weeks old and hasn't been vaccinated yet. The dog was bought off of Craigslist from a litter and the parents were still alive from what I've heard so it couldn't have been transmitted to this dog, or else both the parents and dog would be dead by now.

The dog mainly stays indoors and rarely gets taken out for walks.

Today, I walked into the living room and the dog came at me and was very excited. He tried to climb my leg and while doing so, scratched me a bit. The scratch didnt start to hurt until later when my dog (who is vaccinated) licked it. It's about 2 inches long and is raised a teeny tiny bit. No blood. Nothing. It just stung both when my dog licked it and when I disinfected it.

So, is there a chance I could have been infected? What are some symptoms and do they show right away?

Thanks!