How To Get Rid Of Red Lesion Underside My Penis?

About 3 weeks ago I seemingly overnight developed a red lesion, pimple-like, about 1/4 inch in diameter. It's located on the underside of my penis near the base. I am circumsized. It seemed to be associated with a hair follicle and discharge occured when it was squeezed (moistly clear), but it no longer does that - but there is a pit similar looking to an acne scar pit on the edge of the lesion (this is where the clear discharge came from. It was a bit sensitive at first, but is no longer sensitive. I thought maybe it's an ingrown hair, but shouldn't that have resolved after 3+ weeks? What do you think?