I'm 15 and shaved my bikini area about 4-5 days ago, and two days ago a bump appeared just off of vagina. Its not on the lip, or inside, but right next to it near the end of the lips opposite side of the hood. Its getting a little bit bigger and its sore. Its hard and is the same skin color as the rest of me. There is no discharge that I can see. I am also currently on my cycle and I wear pads only, not tampons. I also have never been sexually active at all and have never been touched down there. Please help and tell me what this bump is.