Did I do something that my facial structure became asymmetrical all of a sudden? (Photos)

I've had an okay facial structure but after graduating in college at the age of 21, my facial structure changed. It became asymmetrical and weird. I can feel the difference between my cheeks and jawline, the lower part of my side jawline is poking out slightly than the other. When I bite, I can't seem to do it properly and feels like there's this empty space in between. Is this not good for my health? I had to wear a mask to cover my face now and don't take pictures as often as I used to. Ty!

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