my boyfriend and i have a been together a year we've been very active sexually and have had no problems until recently and now certain things are preventing us from having sex at all. the back part of the opening to my vagina hurts severely anytime it is touched in any way, my boyfriend has noticed that when he pulls out there is a white milky liquid all around his penis and it is NOT from him. the worst part is that the inside of my vagina starts to burn during sex, enough that i have to stop him completely. it may not start right away but it always starts to burn when we have sex. please help!