I would suggest you to get the x ray of the elbow to make sure that there is no bony injury. Some time even such trivial insult can cause fracture
and we can not be sure about is without seeing x ray.
Also if there is no fracture even soft tissue injury
can also cause severe pain
. I recommend you to apply hot water fomentation and compression bandage. DIclofenac
ointment will also give you pain relief.