i am sexually active girl. and the last time i had sex, was less than a week a ago. well, my vagina was starting to hurt, and it didn t bother me since i thought that it usually happens after sex. but today, i went to check on it since it was sore, and there was this thick itchy white stuff somewhere down. please help me. i m freaking out. i checked online, and it said that it was an yeast infection . PLEASE HELP ME.