hello there thanks for consulting at hcm..i think ur having
tmj problem on the left side, since u also have night grinding, added to that if
stress is also there,,, plz consult an oral maxillofacial srgeon for night guard, ad orthodontist for braces to correct ur malocclusion-over bite,,, u could take analgesics and hot and
cold fermentation alternatively on ur affected jaw,,, u r diet shd be of soft and make small bites of food, and fruits ,,,take a
muscle relaxant also ad avoid stress if possibe,,hope it helps,, take care