Post op Mole Removal, a scar/wound got stretched and turned dark. Will it fade after a while?

I had stitches from a mole removal removed near my lip yesterday. The problem was that the day after, I was eating and I guess I opened my mouth too wide and I felt a sudden sharp pain. I noticed part of the wound turned dark and almost black in colour. My best guess is that I the wound partially opened up underneath the surface of the skin. It doesn't hurt anymore nor is it bleeding in the surface of the skin. I was wondering if the dark spot will disappear after a few days or not? Thanks

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