Yeah, I've been having intermittent bouts of that for the last 2 months ... Right before and after mom's death. The brain was on everything else ... Oddly enough, it's been calming down a bit as Dad has been adapting to living at my house.
The brain plays tricks on us. I hope you can find comfort soon, as well as your other 2 housemates ....
Sleep is an under-rated blessing and often a topic of my prayer time.