Impetigo? Or just a cut

Last night I noticed my wrist was bleeding as if I had cut it on something. Yet I have no idea how it happened. I have no memory of knocking it on anything. It’s very confusing. Today it is very painful and stinging. It sort of looks like a potential bite, two marks. I don’t know if that is what it is. I had impetigo on my wrist as a teenager once but that was 20+ years ago. Anyone got any clues?
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Well it definitely wasn’t impetigo. It hasn’t gotten any bigger. 8 days later this is what it looks like. Still no clue what it is. image