I'm 14, never have done anything remotely sexual in my life. I was recently on vacation in Mexico and three days ago I noticed pain "down there". I ignored it, but last night when I got home I looked in the mirror and it looks like I have a hugeeeee white blister down there! I don't know what to do, it hurts like hell. I can't even put in a tampon and to sit or stand up hurts. Plus I have dance practice tonight. I'm too scared to tell my mom about it because she might think I've done something sexual when I havent! I don't know what to do ;(