Getting the dog tested to see if it does carry the rabies bug, is certainly the better option before thinking about again a shot.
Not all dogs are carriers.
The answer is not to "get a shot if you feel uncertain". The rabies series involve a number of shots and are painful. I believe the chances are that the dog has rabies and very small. The drill IS TO GET THE DOG TESTED! If redness and inflamation appears around the wound, go to an ER or a physician for antibiotics.
More than likely you have nothing to worry about. Just do general precautions to avoid infection.
Not all dogs carry the rabies virus, but it still would be a good idea for you to see medical attention and get a shot if you are uncertain.
bobdylan1958 gives you good advice on keeping your would clean and applying an antiseptic cream. Also keep the area covered so that no dirt and germs can enter through the open wound and keep it dry.
If you do notice that the redness and swelling starts to get worse, or you start to feel unwell, you will require a course of antibiotics - not for any suspected rabies, but open wounds and any punctures to the skin are entry points for bacteria.
Hi please keep the area clean & if you can put some Antiseptic Cream on the wound , keep an eye on it , if it flare's up seek Medical Advice , Take care ,