Hi Elaine,
Welcome to the NeuroTalk Support Groups!

I'm sorry to read about your injury and how you're feeling. I have not ever had a whiplash injury but have had a couple of head injuries. If you've been resting a lot since the injury, maybe you just overdid it yesterday. I would talk to the doctor if you're not feeling well with a pounding heart.

I also just wanted to post the link to the
Spinal Disorders & Back Pain Forum