My trauma

This was a year ago so basically I was in my school (after school) my grand parents are the one who takes me home but as me and my grandpa was walking by there was a dog who was drooling and he ran over to my grandpa I was behind him then he bites me, I screamed my teacher came out of the school and said "(my name) are you okay? " I kept quiet and kept quiet luckly there was a nearby doctor who got a towel and dippped it in cold water and put it on the bite , after that I came home and told my parents after that we went to a doctor and I had 4 shots or 3 one was on my bite and it was so painfull it's like gojo being cut from his lower body after I went out of the doctors appointment I threw up and one day after I got injections every week but after that we went to malls, but if made me have trauma and it never disappeared how to i get rid of it