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I got my mole removed 4 days ago and I was wondering if it looks infected. What should I do if it is? (Photo)

The doctor told me to just clean it with water and put a bandage on it, 2x a day. I asked him if i should apply anything on it and he said "just put vaseline." I did what he told me and I noticed that every time I would clean it, it looked a little weird to me. After assuming it was infected I tried removing the yellow/green looking pos but it was dried until I put water in it. I removed it and it looked like dead skin b/c when I tried to squeeze it with a qui tip it didn't go flat. PLEASE HELP!

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