I found a stray dog and it bit me! HELP!?

Call the local animal control, report the location of the dog, its description and that you were bitten. They will try to find the dog and determine if he has had his rabies shots. If they don't find the dog, go to your local county health department. They will decide if you need to take preventative shots. They are not nearly as bad as they once were. (A friend was bitten by a rabid bat and had the shots recently.)