4 years ago, i got a dog bite in my right leg. It did not bleed, just two marks maybe because of his teeth. I am wearing jeans that time. I immediately wash it with soap even if it did not make any wounds, just a scratch in the skin. And the dog was a dormitory dog i didn't know if it was vaccinated, but when u got to a doctor, he just gave me an anti-tetano shot. Lately i heard that rabies can occur up to 7 years after the bite. Do i need to worry?