One aspect of trauma is the helplessness of it: it's not just how severe the physical reality is, it's also about the inability to do anything about it (and the internalization of that inability).

The classic example is a child who drew a picture shortly after 9/11. The picture included people floating down the building on (I believe) balloons or umbrellas. Obviously unphysical; but the child imagining ways (however fantastical) that could have helped was a factor in reducing that child's trauma.

On a therapist can tell you whether you personally have trauma, but the lessons you took away from your experiences certainly sound like it to me.