I am a virgin, and have never engaged in sexual contact of ANY kind. I have had my period 6 times now. I have never worn thongs, either. Of late, I have been noticing that it hurts sometimes in my pubic area, as if my underwear was caught. When I took the time to look, my right labia minora was somewhat swollen on the bottom, and it was a noticeably redder than the left. This can't be an STD, b/c I've never engaged in sexual contact. I am 15 years old.