So This Is Rather Embarrassing To Admit, But After Some

So this is rather embarrassing to admit, but after some fingering of my anus, by my own person. The next day I noticed a slight annoyance on my anus but it was rather easy to ignore. That night (technically the next day but it's only a few hours past midnight) I decided to check it out to see what it was and to my surprise and shock I saw this pinkish purplish I can't really tell bump on the top of my anus. To be honest it's be easier to show then to explain as I'm no medical expert but I really need to know what's going on, it definitely wasn't there before hand I can assure you of that much