Thanks for writing yor query.
I would like to reassure you that after reading your post, it seems that you have not suffered from any serious injury on head and neck and you should not worry about it.
can be caused due to motiion sickness, especially if travelling on mountains.
You should take rest as it will make you feel much better.
If the dizziness persists, you can take Prochlorperazine
5 mg twice a day along with an antacid like Omeprazole
20 mg once a day.
You should do yoga and meditation
for relief from stress and anxiety
You can take anxiolytic after discussing with your doctor.
If the symptoms persists, get yourself examined clinically.
I hope this is helpful to you.