cut or something on my vagina

chase
okay so i noticed this little white patch, singular, near the urethra opening. i didn't think anything of it because i could barely see it i thought it was just the light reflecting or something idk so i didn't think to take a closer look then i was rubbing my clit that day and it kinda hurt towards the end but i was about to O so i kept going and then it felt a little sore i went about the rest of my day still didn't think anything of it. then that night i saw it was LITERALLY a white patch i was like WTF and it was super tender then i read something online that it might be like a puss pocket or something so i tried squeezing it and the white part peeled off to reveal some sort of abrasion maybe.. HELP