white discoloration

hi

i noticed that i developed a white colored (not white, but lighter colored) area under my glans.
It´s almost 1 cm in diameter and it doesn’t hurt.
I think i have had it for a couple of weeks now. I am also not sure if it’s because of PE’ing.
i was wondering if this is serious?
will this go away by its own, or is there a treatment for this?