Sometimes the bottom part of my vagina hurts during sex...like a sore hurt but even if i haven't had sex yet. not inside, inside, but the very bottom inside of the vagina. am i confusing? i have no idea what it's called. it's always the beginning...possibly because i'm not wet at that moment? maybe i'm sensitive. should i try a little lube cause sometimes spit isn't enough. or maybe it could be a possible problem?