For the past couple of weeks, my vagina became sore whenever I had sex with my boyfriend. It's like the deep part of my vagina is on fire. Today, my boyfriend and I were having sex and heavy, white, runny, odor less discharge came out. (almost 1/4 of a cup). The walls of my vagina didn't hurt as bad as they did before, yet the deep vagina pain remained. What's wrong with me?