Seems to b Tmj  pain, advice u  soft diet, muscular exercises,  alternate, hot and cold fomentation , muscle relaxant for 5days. 

Keep doing exercises and take muscle relaxant .If it also persists after this,then visit nearby dentist.

It's common in most of the cases. Don't worry ..do mouth opening n closing repeatedly..tek muscle relaxant like flexon tablet

Hi,the pain in your jaw could be either due to the lower wisdom tooth that may be supraeruting{eruption of teeth to meet the antagonist when there's a space there in upper jaw}or it may he causing a cheek bite,or it could be some TMJ joint pain.As of now,have a soft diet for few days,do warm salt rinses,also take Flexon MR thrice daily after meals along with an antacid for atleast 2 days.If your pain doesn't subside,then consultation with an experienced dentist and necessary investigation or X-ray may be required.