I would trust your therapist.

I could have written your post a few years ago. I couldn't rationalize every using the word "traumatic" to describe my life. It took a long time to be willing to view things differently.

People in your life may not feel like you have PTSD. You may not think your experiences were "that bad", but I doubt that your therapist makes you want to feel worse about yourself by telling you that your experiences are worse than they are.

Acceptance is a really hard thing.