Should I be concerned for the closeness of my left incisor? Is my night guard too tight? (Photo)

I wear a night guard for grinding/clenching my teeth while I sleep. My left incisor is a little wiggly/loose and I am not in pain. That tooth has a fracture but it is not severe and not causing any pain or sensitivity. In the morning when removing my night guard, that I purchased from the store and molded myself, I feel sore where my left incisor is.

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