I see this is a bit old, and maybe you even gave birth by now, but I had to respond as I was in your position 7 months ago! I was neg with my first child 5 years ago so wasn't expecting to positive this time. I was very upset at the thought of having the IV, I didn't even want that. I talked about it with my amazing midwife who reassured me that I could still get in the shower (she had the nurse cover the IV needle with a rubber glove over my hand) and basically let me know that I only needed two doses. I asked how it would affect things being that I wanted to stay home as long as possible...she said, "good question" and let me figure it out....I did end up staying home as long as I could stand it and then by the time I got to the hospital I only got one dose of the anitbiotics in me. I had no problems with yeast, and my baby didn't either. While the risk of a complication is rare, in my mind if it was MY baby then I didn't care about the statistics. Good luck!