For the last few days I've had a problem with swelling in my labia minor, and it's sore and a little red. There's no irregular discharge. It doesn't really itch constantly, just every now and then like normal, but it hurts to scratch. If I do scratch it quickly becomes irritated and burns a little (probably because it's raw). There's also a good deal of smegma, despite my attempts at washing every day. What's wrong with me, and how can I fix it?