Just life
I am not any sort of medico, but having experienced basically identical symptoms in the past, it sounds very much like a severe depressive episode.
(I apologize if this falls into the unwelcome and unasked-for advice category, but having spent much of my life dealing with those, it'd feel awfully remiss of me not to try and shorten any possible sufferers' path to the Eleven Secret Drugs and Supplements.)
Just life
@cerebrate
I have chronic (untreated) depression. It's always been more mental than physical for me.
I've had "What's the point of getting out of bed?"many times, but not "I keep sleeping through alarms and when I get up I'm groggy for hours."