I had sex with my boyfriend and I had a little irritation. We kept on having sex for the next couple of weeks then it start to itch a lot. Now it's pink & super swollen with little bumps. I'm not sure what it is & I'm really worried. It's not any STDs because we've both been tested. If I get pee on the bumps it burns. Also anything that rubs against it irritates i.e. my underwear which is horrible. Even the air from my farts irritates it. Any idea what this could be?