49erGurl, ugh getting rear ended is the headache pit of the world, and especially when a person has neck problems to begin with. Maybe try a darkened room, an ice pack and peppermint essential oil drops. I saw this migraine management idea here. I am sure there are lots more from the peeps here. Hope you feel better soon.
49erGurl, I'm so sorry! Did you get seen by a doctor? You probably need some muscle relaxers, which would help with the migraine. Try to relax in a dark room, maybe with soft music playing. Hugs & prayers you feel better soon, and the headache is improving! 🙂💕🙏🌼