Regarding rabies. Effect or reaction?

Sir i was going through a village road,as it was a raining day so their was water in the road,a truck was coming from front n it crossed over the water due to that some parts of that road water sprayed on my legs,their was a little cut on my leg of 2-3days earlier,but it was covered by black skin and i saw earlier a dog was drinking that water,so my question is That (i).because the water touched my legs and their was old little wound of 2-3days earlier so Can i getrabies?? (ii)Should i have to take vaccine?? If yes then how many vaccines?? (iii)Earlier i have taken 12vaccine from 2008-2012,so if i again take vaccine will there be any side effect or reaction???I have attached images of my leg small cut TODAY I VISITED TO A LOCAL MD DOCTOR HE TOLD NO NEED TO TAKE VACCINE AND DONT THINK SO THINGS.