Like Jane and others said, it's a psychological thing that only now can you let yourself put what's happened into some kind of perspective - and that perspective is more than a little scarey.
It's also a physical thing -- an adrenaline crash.
Used to happen to me when Rip would come home from the hospital.
He'd get settled on the couch and I would fall asleep -- just when I was actually supposed to go "on duty". Over time I learned to keep the adrenaline flow "down" when these "crises" things happened (crises to others; normal to him) and actually rest a bit when he was in hospital so I was in better shape when he came home.
Be good to yourself and let your adrenals recover.
take care
It's also a physical thing -- an adrenaline crash.
Used to happen to me when Rip would come home from the hospital.
He'd get settled on the couch and I would fall asleep -- just when I was actually supposed to go "on duty". Over time I learned to keep the adrenaline flow "down" when these "crises" things happened (crises to others; normal to him) and actually rest a bit when he was in hospital so I was in better shape when he came home.
Be good to yourself and let your adrenals recover.
take care