After a marathon masturbation session on a web cam with a way younger guy than me I noticed a knot just below the head and on one side of my penis.

It doesnet hurt, but hasnt gone away in a couple of days. It looks like an engorged blood vein and feels like a piece of cartilage.

What research I have done suggests it's a lymphocele and is harmless.

Why now? What can I do to prevent them again?

Thanks,

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