Welcome to healthcare Magic!
You might have suffered some internal injuries.
A chest Xray and a Chest ultrasound
is worthwhile to diagnose your problem.
If you can consult a physician he may do away with USG to cut down the cost if he thinks a Chest Xray would suffice which is the case mostly.
You should take OTC pain killers like Ultracet
8hourly just to control the pain.
Please get these investigations and if you like, inform me in a Fresh Query / Follow up Query for further fine tuned opinion
Wish you a great health!