Weird painful spot on chest.

23F, 5'6, 140lbs, white, don't drink or smoke. I found this spot on my chest today, it's about the size of a pinhead I'd say (photo included). Pink/reddish outside with protruding white in the middle. It was noticably painful today but only painful to touch now. I (stupidly I admit) used a blackhead removal tool on it, the white part came off, but it has since healed back to pretty much exactly how it was before. Is it serious? I'm worried. Google (AGAIN STUPID I KNOW) says it's an abcess and can become septic. halp :(

https://imgur.com/a/IIqDym2