Infected baby belly button or not?

shelby

Baby boys stump JUST fell off! Before it fell off it looked totally normal. No changes at all from when we saw his Dr last. But when it fell off it appears to have a puss pocket. Bis Dr's office is closed for lunch right now but my mommy brain just wont stop.

Does it look infected? To me its an obvious yes. But I have no clue what I'm looking for.

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