I just went through this last week. I was negative in my first pregnancy too, and very disappointed to test positive this time. I know the risks are real and it made me nervous (friend of a friend's daughter had complications), but I also know the risks of antibiotics so hibiclens seemed like the best choice. I bet you've already seen these links, but I'll share them anyway just in case:https://www.birthwithlove.com/pdf/GBS/pdf/GBSCHLOR.pdfhttp://www.birthcottage.com/images/GBS%20Protocol.PDF
The first one really helped set my mind at ease, because the study showed that results were similar with hibiclens and antibiotics. The second one contains specific instructions for how to use it. I attached that to my birth plan and took it to the hospital with me.
My doctor was totally comfortable with me using the hibiclens. He said the risks were so minimal after the 37th week he would be fine with using nothing at all. However, he did want me to call and come in right away if my water were to break, rather than labor at home. The birth center made a bigger deal of it than my doctor. They insisted that I talk to the pediatrician about it, and went over the risks with me. The pediatrician was fine with my decision.
My birth center is located in the hospital. When we arrived at the hospital, the birth center was full and I had to go to triage (sp?) for a couple of hours. There was one nurse in triage who was a bit difficult about it and said using hibiclens was against hospital policy. Of course I'd already cleared it with my doctor and I brought my own solution that I was determined to use, so she dropped it.
After my son was born, the worst part was all of the blood they had to take from him. We also had to stay in the hospital for 48 hours to make sure all of his tests were fine. I didn't mind that part because it meant 2 days of relaxing and having someone else cook for me.
So that's our story. We had no problems and if I had to do it again, I'd definitely do the same. I hope you can find a decision you are comfortable with. Good luck!