NCGuy,
Welcome to NeuroTalk.
Your symptoms sound like concussion symptoms. There is no such thing as successfully toughing out a concussion. You only delay recovery.
Most generic neuros are not much help with concussions. You need to find the right doc, neuro, physiatrist, sports med, etc. I suspect you will be involved in a legal action with the driver. Maybe an attorney can direct you to the best concussion and whiplash docs in your area. Not to scare you, but I suggest you prepare for a long recovery because there is diagnostics that will help you protect yourself. Most concussions (85%) recover in the first 2 months. Those that don't can become long term issues.
Read the sticky at the top about Vitamins. It has good links to resources. Read about concussions and legal issues at
www.tbilaw.com and
www.subtlebraininjury.com
In the mean time, you need to get quiet rest. Not just sleep but low stress living. Try to keep a normal sleep schedule and don't push during the day. No drinking, minimal caffeine, healthy eating, and quiet environment usually helps.
Feel free to ask anything. Lots of good experience here.
My best to you.