No medical or trainer credentials here...just blind opinion!!
I know when I've had a cold or something that knocks me off my training, as yucky as this idea is, I really have to start back with baby steps again.
I'll bet it won't take you long...but, maybe by starting with 2-3 days in a row of recovery riding...just easing back into the bike...that you can then sort of jump start your training back up to normal?
Your body has experienced stress...maybe not workout stress...but stress none-the-less...so might need some easy/active recovery?
As I said, just guessing...
"The best rides are the ones where you bite off much more than you can chew, and live through it." ~ Doug Bradbury