I've used the 1-day before and it did not work. I had to get the 7-day. The 3-day should work just as good.
As far as the dial soap, I don't think women are suppose to use anything anti-bacterial on their genitals, because it washes away the healthy bacteria we have down there causing BV.
**I get yeast infections a lot from antibiotics because I also get strep throat a bunch. So, I know it's not an STD.