You're having a non stop flashback with depressive symptoms.

Here is a resource for the flashbacks: http://www.pete-walker.com/13StepsManageFlashbacks.htm

Here is a resource for depression and self-care: https://www.aimeemaxwell.net/wp-content/uploads/2017/11/everything-is-awful-and-im-not-ok.pdf

Your body thinks it has the flu (depression) and is being chased/attacked for long periods of time. Of course you're exhausted.

The best treatment is EMDR. You can start by tapping or moving one side of your body and then the other slowly till you calm down some. This should be done with a professional but sometimes you've got to get yourself stabilized. It's okay not to be okay, too.