The pain you are having is because of the trauma you had because of which the joint got slightly dislocated and you have a muscle injury
. To resolve your problem:
1. Take a muscle relaxant
+ pain killer twice daily to relieve the pain and loosen the muscle.
2. Place a heat pack on the site of injury/pain and do it atleast 5-6 times a day.
3. Do no open your mouth wide in any condition. Even when you are yawning, place your hand below the chin forcing it upwards, so that you don't open it wide.
4. Do not eat hard things for at least a week. Take soft diet
and avoid chapati's etc. where you need to chew more.
Do the above mentioned things for 10 day. You'll be relieved of your problem.