at first i thought i had an STD because i shared razors with my sister but after a year nothing, so i'm kind of over that since i'm pretty sure *crosses fingers* nothings the problem

this morning i woke up and my labia was hurting a lot. I couldn't see it but it felt like a hole or some kind of rip or tear on my right labia. No, i'm not sexually active, i am a virgin. But a couple of years ago i used to scratch my vag a lot. Now i'm worried that this could be a bad thing. Do i need to go to the doctors or do you think it will heal? What is it? :'(