Hello, I have recently discovered a small red bump - rahter like a mosquito's bite - on the outside lip of the vigina. It almost doesn't itch or hurt unless I touch it. I am 18 but have never had sex and I am due to start my period very soon. I have tried taking an alergy tablet but for no use and have not used any soaps since other than for the non-allergenic wet wipes. Please could you tell me what it could be?