I know your post was from 2008, but I have to respond and hopefully it will send you the msg! I had the same deal going on- went to a couple of urologists, tried a mild preventative antibiotic, tried laying off the caffeine, chocolate, spicy foods, alcohol, etc. Tried peeing after sex, blaa blaa blaa, every single piece of advice. Then I discovered I have an aunt who had the same problem. She has a doc who told her about this herbal pill called "Cysta-Q" that you have to order online (might be in stores by now?) but it seriously saved my life. It's like a miracle for constant bladder infections and hyper-sensitive urethras! Go to their website and read about it. Anyhow, you can take it every day with your vitamin, or you can take it whenever you feel the burning coming on, which is when I take it. It's got Quercetin (sp?) in it, which I think is the magical ingredient that helps flush your system of bacteria. I'm trying to share this with everyone I know, because my life is no longer miserable from this!