Left of midline of top teeth coming forward/flipping outward??

[j40salyers]

Hi. I have always had an overbite until i had braces. Of course i didnt wear my retainer and they stuck out alot again.i put my retainer back in and it fixed my teeth, but the left side of my midline on the top seems to still be coming outward. I have constant pain and sort of a numbing sensation in my left jaw. I have a tongue thrust, which causes my teeth to come forward, but the pain is worse than ever in my left incisors and only my left side is hurting...someone with knowledge on this please help me. Could breaking your nose/frame/dislocating your jaw do this?