Please help

Hello ladies I need your help really bad okay so one morning I woke up with a burning sensation on my vagina and as I took a shower it eased but when I got out it was burning again I looked at in a mirror and I thought it a bump because of how it felt but as I looked closer it’s more like a scrape and idk how it got there I’m so confused but I know the slightest touch it hurt whether I’m walking or sitting down and urinating is is worse when it touches it does anybody know what it is please help