YES! Sometimes I get so mad that I want to break and smash things.I don't act it out,but these images come up in my mind. I see myself hitting objects until I hurt myself.Or otherwise being violent. Never to other people,just objects.I can't say I have felt it in my stomach,but that sounds right.My anger scares me. I always take it out on myself,in terms of not letting other people know how angry I feel. Because it feels out of proportion,like too much.