Perhaps not. It has gone to unreasonable? Trauma requires us to go over and over and over the event, preferable with someone who listens and can help us put it in it's proper place. (In the brain, properly "filed.")
The object is to DO something about these thoughts. You can try STOPPING... I mean, it's a technique called that. where as soon as you realize those thoughts are running, you tell your brain (self) STOP. Maybe an additional line like, that isn't happening right now, so I don't need to think about it right now.