I actually assumed you had done a fair bit of reading to have the idea

I have had three children and have not had a GBS swab for any. It was never suggested by any of my health care providers, including hospital in Australia and then separate midwives in NZ. I asked my midwife when I was pregnant with my second child and she had been a midwife for 20 years and had not tested a single time. She said that if there was a prolonged ruptured membranes/other risk factors then they would act accordingly, but giving the ABs during labour as a precaution was more trouble than it was worth (more chance of a reaction from mum than bub contracting GBS).

I would ask for another test anyway, hopefully the garlic has done its thing. As a tip, add some yoghurt to the mix after garlic - in my experience it seems to kill everything and you need to recolonize.

I would be looking for the irrigation washes - the ones you have listed contain other ingredients that may irritate. Google Superior health care, they have a bottle of what you want.

Good luck, try not to stress too much about it xx