Ingrown hair cyst not gone after 1 year.

Last June, I decided to trim my pubic hair.. One day later, it was so itchy. The itching stopped several days later, however. After several weeks or so, I noticed tiny blood on my right underwear and found out there were some red bumps on my pubic mound. I thought it was some ingrown hair that got inflamed. So I applied some 1% hydrocortisone. Then the bump become red and big and painful to touch after several months so I applied bydrocotisone again. But even though almost a year has passed, there's still this something like ingrown hair left on my mound, as shown in the photo. It's not itchy, and I'm not using hydrocortisone on it anymore. But it's not disappearing. I sometimes put aloe Vera gel on it. What should I do? How can I get rid of it? (And what exactly is it?) The color of the surrounding skin is also off so I want to restore it to normal color. I haven't trimmed since last June, by the way. I'm also wearing loose cotton underwear lately. I  am a virgin so not STD.