my left cheek was hurting 2 days ago, as it getting worse with mild swelling of left side. Inside of my left oral cavity betweem jaws  is paining, and i noticed a white looks like lesion ( may be wrong) and mild red. I didnt have any toothache. But i am irritated , having tendency to grind my left side, and i feel some weird sensation. Please help me.
Dear friend. Thanks for sharing your concern. As per history given, it appears you have developed lesion, due to cheek biting. Many people have this habit, but you should try to avoid it. You can do antiseptic mouth rinsing first and then apply colonel on the lesion for a week, (to be applied locally) thrice daily. You can do this for a week and see the results, if it still persists then might be a tooth decay. In that case you must see your dentist for clinical evaluation. Hope it helps. Thanks. Take care.