I think I got my stutter from playing tag when I was 5

I think I got my stutter from playing tag when I was 5 So I'm a high school student rn taking anatomy and we just learned that the part of the brain that controls speech is in the frontal lobe. Well when I was in kindergarten I have this distinct memory of running into the same poll while playing tag 3 or 4 days in a row and banging the shit out of my head. I'm thinking lil me got a slight bit of brain damage from that and caused my stuttering. That's just a theory tho