Thanks I did some research and it doesn't seem to make sense for that to still exist nearly 18 years later. Everything I've read seems to say that PCS is temporary or things like "In late, persistent, or prolonged PCS (PPCS), symptoms last for over six months,[7][9] or by other standards, three.[10]" (from Wikipedia). It didn't really say anything about this many years later, is that possible?
Many of the psychological symptoms I do notice in myself, but all that started when I was 12-13 years old so I don't think that's related to any of this.