We tend to "space out" when whatever is going on around us ( and/or within us) is just too much at the time.
Sorry you are going through this. It's very difficult to endure. You can get through it though. I'm pulling for you!
You've shared that flashbacks had triggered you.
Are you working with a therapist?
Trace gave excellent advice.
What has helped you in the past?
Please get some peaceful rest and stay safe.

WC