I hope you will be feeling better soon. Yes, bed is the safest place for you right now. i too am curious about the collar... is't that staple for whiplash?
I don't know about that wooziness, don't get why they didn't check for concussion, but stay put until your head clears up and if it doesn't in a day or so... i would go in again.
meanwhile... well, avoid stuff like this
why does life have to be such * PAIN *
~ waves ~