Hi, i am 19. Last year august i decided to experiment with a brush. I masturbated with it. Since then I've been having very bad itching in that area of my body. I've gone to the doctor three times already and got antibiotics for yeast infection but it hasn't helped at all. My period has been very irregular since then. My question is it possible that there could be some sort of vaginal blockage there, could it be an STD, could I die from this. I'm really scared and confused because this has never happened to me before. HELP!!!