Dej, before I took any meds (steroids) for this I'd give myself permission to hibernate for a few days.
No outside visual or auditory stimulation. Just peace and quiet. If you need to sleep then sleep. Drink plenty of water and don't give anything a thought but you feeling better.
Jack is well now......they have their catio to keep them entertained.
The car situation is finished.
You might just be having a "let down" effect to all the stress that's been going on in your life for so long. Let DH take care of anything that needs doing away from home.
You need a much deserved break.