While playing with a pup I got a little prick from its tooth.prick wasn't deep but there was a slight torn in the upper layer of my skin and there was no bleeding. Although I saw a red spot inside my skin.So, I washed my hands with soap and after I removed the skin and let the blood flow out. The bleeding was not severe and then I applied betadine ointment. My pup is 3 months old and is vaccinated. it has never come in contact with any other dog except its mom. Do I have to take PEP?