My 9 year old son just came out of school and was in a mood . I assisted him and his cousin into the back of the car as I have a 7 seater he started hitting the window with his metal drinks bottle with some force . I asked him to stop and calm down but he continued to do it so I leant into the back as I was putting my younger son in the car and held his wrist so I could take the bottle out of his hand but I left a mark I didn't think I held his wrist hard. Now I am so worried it's making me feel ill. I asked did I hurt him when I held his wrist which he said no but I don't know what to do