Is this anyone else here?

I'm not sure what topic this is under, as I'm still coming to understand it, but when I was younger, probably 3 when it started, I didn't understand what mom was asking of me. Which makes sense. I was three. Only she had never learned what to do with anger or frustration when she was younger. So, a light hit to the head and tons of emotions thrown at me. Apparently, it is called emotional abuse? I don't remember this and it doesn't happen anymore, but this caused triggers. specifically touch to the head. I don't like it, and most people aren't allowed to. The problem is I do a form of martial arts and one of the things we do often results in people hitting me in the face and head over and over. not anything predictable either. I am required to do it and struggle to get through it at all in the first place.