Nasty smell

Ok this is TMI post so proceed with caution. My period just ended a day or two ago and now I'm experiencing an awful smell down there, like rotting flesh or something. I've had this same smell before right after my period was over and it eventually went away. I am not sexually active at the moment and do not douche or anything like that. I looked it up and saw something that said it could be BV, I just needed other opinions. What do you ladies think this sounds like?