Help?

I had an itch the other week (down there) so I scratched it and it was like right under there if that makes sense I scratched it a bit too much as it was healing it got an itch in around the same spot it’s now all swollen an it hurts to move how do I make it heal quickly

UPDATE

I ended up telling my mum an she tried blaming it on sex but she got me some vagisil and it’s fine now just put tha on when it itches (not as much now)