Post traumatic

There is plenty to do with cooking, cleaning, living, loving, and in the midst, when I least expect there is this tripping up that happens. Like a few nights ago when I walked upstairs. I'm still needing to lean heavy on the rail but I make it just fine and I'm about to enter my bedroom. It is dark and my door is closed and as I open the door, I get this instant swoosh of fear and dread of cancer death as if it were lurking and hiding there just on the other side.