Thanks for the question.
In view of symptoms, you need to get chest xray done to look for rib fractures
Sometimes you can get pleural effusion
and lung contusion
after such injury
. Xray can help to rule out these possibilities as well.
So seeing doctor and getting x-ray done would be ideal steps in your case . Please ask if there are any doubts or if you want me to explain anything.
Hope this answers your question.