Persistent pimple on penis

About 2 weeks ago I noticed a very tiny (1mm) pimple forming on my penis, which I honestly forgot about. After having sex about a week ago, it’s grown to about 4mm (0.15 inches) and it’s red. There’s barely any pain even to the touch, but I can feel a slight discomfort.

It’s placed on the head (foreskin) when soft, and shaft when erect, as it moves with the skin.

I’m not sure what to do as I’ve read it’s not recommended to “pop it” but I also don’t think it warrants a trip to the doctor.
Any recommendations on treating it? Should I just leave it be?

Photo:
https://imgur.com/a/V8xNXpL // https://i.imgur.com/mflouuH.jpeg

It doesn’t look like anything nefarious at this point. I’d say try not to aggravate it for a few days and keep it clean and dry.

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