You really should go to the ER !
Things happen to the body after a shock like that.
What you think of as aches and pains may turn out to be warning signs of further trouble.

Tell the doctor that your neck and back hurt tremendously and you can't sleep or perform normal everyday activities.

ibuprofen if likely the best start; if you have the gear for it a hot bath (although make sure you have someone to help you out, possibly in - you may be too sore to do that on your own. baring that, a heating pad or hot water bottle.

ER? Whiplash maybe.

Ice packs and rest

go to er, get checked, and they'll have meds for you

Just meds and medical checkup
Use some heat if that helps and stay active and ride out the storm
Often will be sore for a few weeks and many people get better

I would look up stretches for sore muscles. I hurt my neck while exercising the other day, Googled some stretches, and they really helped with the pain.

Ibuprofen is a good choice. I got rear ended a few times a year when I was driving a cab.

Unfortunately you're going to be sore. Ibuprofen. Warm soaking bath. Epsom salts if you've got 'em. Good luck.

I would have gone to A & E by now you could need strong painkillers and checked over for possible fracture, strain/whiplash.

What did the doc say? Chiropractor & aspirin or something stronger?

Marijuana

Sorry to hear that. Damn. Just taking things slowly. but watch your meds