Thanks for choosing health care magic for posting your query.
I have gone through your question in detail and I can understand what you are going through.
Trauma could have led to hematoma
or a soft tissue
swelling. this can cause soreness and pain which can last for 7-10 days. Mostly it recovers by self and you just have to give it some time. It doesnt appear to be whiplash
If it is hurting a lot then you can take acetaminophen
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, you can use the below mentioned link:
Wish you good health,
Dr. Srikanth Reddy M.D.