All of a sudden my vagina smells like rotten meat. NOT fishy. I have NO other symptoms.... NO pain with sex, NO unusual discharge or forgotten tampon. NO itching or discomfort while peeing. I've NEVER used a douche and haven't changed my soap. I'm very hygienic but not overly so. I have NOT changed my diet and have NOT started or stopped any medications. I have just got my period and it smells even worse, i have to use a tampon because the smell is so bad . What could this be?