I agree with Concussion. Avoid the Seroquel. I was offered that years ago and looked into it. It is a scary strong drug for use in extreme situations. It sounds like your doctor likes to use his prescription pad to treat patients. You need to find a doctor who has better skills with concussion and whiplash.

Icing your head and neck frequently should be beneficial. Some light head traction and head/neck mobilization should be helpful. Finding a physical therapist who can help with this is important. A physiatrist (Physical Medicine and Rehabilitation ) may be able to direct you.

Ginger is a good anti-nausea agent. You can get it in many forms from cookies, soda, in root form for juicing or grating into food, or in capsule and tablets.

Low dose amitriptyline (10 to 25 mgs) at night is a standard med to help with sleep and head aches. It does not help everyone but is a safe med to try.

Stay in touch as you struggle through these symptoms.

My best to you.