Nothingness

I remember something traumatic that happened to me in my life and when I think about it, it still pains me. But it was so weird, because when it actually happened, in the immediacy of it, I felt nothing. Only later did the pain I have felt arrive and continue to bother me ever since. I just thought it was interesting because something I read recently claimed that’s what the first symptom of PTSD is, that feeling of nothingness.