What's wrong with my face? Where are the proportions off? What's happening here? (Photo)

I have serious problems with the way I look. It seems at some angles, I'm okay...but at others, or especially when I smile, my face becomes unbearably weird-looking. It's starting to ruin every event for me. I dread people taking pictures of me. I just want to enjoy life. At first i thought it was my nose, but now it seems my whole jaw is off...I lost weight, and that did help...but not enough. Could someone please help me pinpoint the problem so I can get it fixed, please? Thank you!!!!

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