Has my chin implant moved?

I had a medium chin implant just over 3 weeks ago. Up until 5 days ago the healing and look of things were going great and apart from a little soreness when eating the pain had more or less gone. I have now noticed that my chin looks slightly lower on the left hand side and is hard and uneven feeling. The pain is back just in this area and Am having to take paracetamol again to eat. Any advise would be so helpful, has the implant moved and do you think this will sort itself out? Thanks again

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