Red spot near nipple and some puss came out. Anything to worry about?

I think this happened overnight but I saw a red spot near my nipple and it’s not solid or hard. Didn’t even feel raised just normal skin. I didn’t pinch it but I was trying to feel it and some puss came out where the red is. So I washed it. I have been working out more and sweating and didn’t get a chance to shower yesterday so maybe it’s a pimple?

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