I've done a bunch of research on alternatives to antibiotics for GBS during labor. I would be happy to PM everything to you (it's long). There ARE reliable alternatives to antibiotics, they are just not well known in the US. The most successfully researched is a a vaginal area rinse with Hibiclens (chlorohexidine solution used to kill bacteria in a surgical setting).
To answer your question about the IV, it's a drip type of bag, but you can usually get a hep lock, which will allow you to remove the bag when you don't need it. One dose takes about 4 hours to deliver, I believe, but don't quote me on that. GBS comes and goes in the body in waves. It takes about six weeks for a colony to really establish itself, so you may test differently at different times of your pregnancy. Ask to be retested between 35-37 weeks.
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