Thanks for your question on Healthcare Magic.
I can understand your concern.
Yes, you should wait for 2-3 days because headache and
neck pain are common after such head injuries.
You should do following things for better symptomatic relief.
1. Avoid sudden jerky movements of head and neck.
2. Drink plenty of fluids orally and keep your self hydrated.
3. Apply ice packs on affected part of neck and head.
4. Take combination of painkiller and anti inflammatory drugs.
Don't worry, you will be alright with all these in 2-3 days.
If you are don't improve after 2-3 days then
consult doctor and get done clinical examination and CT brain to rule out internal
brain injury.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.