Suggest Treatment For Red Spot On Anus

So I haven t had sex in over a year, but I have had some issues with a small red dot; kind of looks like a bump on inside of my pee hole when you stretch skin out. It did itch at one point for about a week and then it went away. And at one point a white dot appeared next to it, almost like a zit but it was very tiny. Now the white dot only has appeared once or twice in a blue moon, but the red dot is still there but no itching. All my STD tests came back negative. What could this be? And will it go away?