Ok so last week my boyfriend and I had sex and I used spermicide for the first time. All was well until 2 days later when I had this absolute horrid smell coming from "down there". So I did research and read it could be BV. So I started taking folic acid and probiitic acidophilus every morning, and a yogurt soaked tampon at night. It has been about 4 days and the odor is gone, but I still itch like crazy. Could the BV have gone away and now I have a YI? The itching isn't bad, it just comes and goes, but its still irritating.