Is it possible to get jaw reconstructive surgery? Is the surgery expensive? Could something be wrong with my jaw line? (Photo)

It looks as if my jawline is too long & one side of my jaw is bigger than the other (like there's a lump or something). I even took a picture from the back of my head so you could see how my jaw looks when facing behind me. I often get pain when trying to yawn & when chewing. My face has been like this for so long & I never knew why. I tried to do research, but I wasn't getting any answers. I really want to fix my jaw & get that "Lump" removed. Help?? :(

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