I took a softball to the right side of my chin 4 days ago. since then, the left side of my jaw at the joint and my left ear have been really sore. i c?

TMJ: One's jaw can get damaged from trauma such as yours. Since the ear is adjacent to the jaw, it is often perceived as earache. Have you try NSAID, ice or heating pad at the local area? If the problem does not improve after 2 weeks or gets worse, you should consult your dentist. In the meanwhile, avoid chewing tough food for at least 2 weeks.