Had a mole on my chin removed 3 months ago and is now bleeding and a red circle. Any suggestions?

It was titchy and i may have scratched it to hard, that made the wound swell up and get very red with what looked like a blood blister. The next day i strapped it up with surgical tape again and now it is bleeding with a yellow pus in the middle. I am worried i may have reopend the healing scar.

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