Whiplash! My neck is arthritic from the whiplash in my accident, and it didn’t show up until 25 years ago. Fifteen after the accident. I hope they X-rayed your neck. It could be pinching a nerve in your back.
</Momology
Glad you're alive and generally undamaged, Darks. But I'll second 'Face on the pinched nerve business. I had an accident several decades ago in a car with no headrests (I just just installed the seatbelt not long before the accident else I'd not be here now) and was plowed into from behind by a '57 Chev going 35 - 50 MPH. (I was stopped in a VW-bug-sized car.) The driver's seat collapsed, which probably saved my neck some, but I wound up in a foam neckbrace and near-constant headaches the next year from a pinched nerve.