Butterflysaddle-
At the risk of getting disagreed with....I'm going to suggest to you that perhaps you would benefit from eating more fresh fruits and vegetables and more protein in your diet.
When I was in my 20's I used to get lots of female problems including stubborn recurring yeast infections. My gynocologist kept giving me medicines and acidophilus etc, but it would keep coming back.
I went to a different gyno doctor- a very very OLD German woman doctor. After listening to my complaints she had me write down what I'd eaten for the past week as best I could. I had been eating mostly junk and processed convenience food. I was also smoking and drinking too much, which made things worse.
She then gave me a huge lecture about how my body would never be able to fight off these infections on its own until my diet improved a great deal. She gave me strict orders to eat 3 fresh fruits and 3 fresh veggies every day, and a certain amount of protein as well. She really laid into me and scared me into following her instructions! After that my yeast infections and other gyno problems went away and I think I've gotten one since then (I'm now 55).

In any case, I just thought I'd mention it as another weapon to battle yeast infections. Don't underestimate the health power of lots of good fresh produce and protein!