Hi, My 4 Months Old Golden Retriever Bite Me..nd A

Hi, my 4 months old golden retriever bite me..nd a little blood came out..! Nd im confused if i have to take an injection because im already takin a 5 courses dosage of rabipur.. 4 are done and other one is left do i still have to take an other set of course? Plz help
Tq